Antibiotics for Birds, Poultry & Fish
The full antibiotic range by active ingredient, so you can match a known diagnosis to the right drug and pack size.
Related: Birds · Pigeons · Chickens & Poultry · Fish
149 products
Vetafarm Doxyvet Liquid | Doxycycline Antibiotic for Birds
Regular price Sale price $24.95 Save $-6.00Vetafarm Doxyvet Liquid Doxycycline Antibiotic for Birds
Broad Spectrum Doxycycline Antibiotic for Treating Bacterial Infections in Birds
Vetafarm Doxyvet Liquid is a broad spectrum doxycycline antibiotic for birds formulated to help manage bacterial infections commonly seen in parrots, finches, canaries, pigeons, and other avian species.
This easy-to-administer liquid doxycycline solution is widely used by bird owners, breeders, and wildlife rehabilitators to help treat respiratory infections, bacterial illnesses, and other infectious conditions affecting birds.
---
Key Benefits of Vetafarm Doxyvet Liquid
- Broad spectrum antibiotic: Helps manage a wide range of bacterial infections
- Doxycycline-based formula: Trusted antibiotic used in avian medicine
- Easy liquid dosing: Can be added to drinking water
- Supports respiratory health: Commonly used for respiratory infections
- Professional-grade formulation: Used by avian professionals worldwide
---
Common Uses for Doxyvet Liquid in Birds
Vetafarm Doxyvet Liquid doxycycline is commonly used to help manage bacterial infections such as:
- Respiratory infections
- Sinus infections
- Bacterial respiratory disease
- Chlamydial infections
- Secondary bacterial infections
- General bacterial illness
---
Active Ingredient
Doxycycline Hydrochloride — 50 mg/ml
Doxycycline is a widely used broad spectrum antibiotic known for effectiveness against many bacterial pathogens affecting birds.
---
Directions for Use (Birds)
Mix the recommended amount of Doxyvet Liquid into fresh drinking water daily.
- Bird Dosage: 1 ml (approximately 20 drops) per 100 ml of drinking water
- Treatment Duration: Typically 7 days or as directed
- Fresh Solution: Prepare new solution daily
- Post Treatment: Provide probiotic support for 3–4 days following treatment
---
Directions for Use (Pet Rats)
- Dosage: 5 mg/kg body weight twice daily
- Typical Use: Approximately 1 drop twice daily for average-sized pet rats
- Treatment Duration: 2–3 weeks or as directed
---
Suitable Species
Vetafarm Doxyvet Liquid is commonly used with:
- Parrots
- Budgies
- Cockatiels
- Lovebirds
- Finches
- Canaries
- Pigeons
- Pet rats
---
Why Choose Vetafarm Doxyvet Liquid?
When bacterial infections develop, early treatment is important. Doxyvet Liquid doxycycline antibiotic provides dependable broad spectrum antibacterial support in an easy-to-administer liquid format suitable for small birds and exotic pets.
This makes it a reliable option for bird owners who need effective treatment support while minimizing stress during administration.
---
Storage Instructions
- Store in a cool, dry place
- Keep tightly sealed
- Protect from direct sunlight
- Keep out of reach of children
---
Doxyvet Liquid FAQs
What infections can Doxyvet Liquid treat?
Doxyvet Liquid is commonly used for bacterial infections including respiratory infections and secondary bacterial illnesses.
Can Doxyvet Liquid be added to drinking water?
Yes. It is commonly mixed into drinking water for easy administration to birds.
How long should birds be treated with Doxyvet?
Typical treatment duration is 7 days, but duration may vary depending on condition.
Should probiotics be given after treatment?
Yes. Providing probiotics after antibiotic treatment is commonly recommended to support digestive health.
---
Probotic
Regular price $19.48 Sale price $18.49 Save $0.99|
Re-establish the natural gut flora after infections, diarrhea, stress and the use of antibiotics. What is a probiotic? A live microbial feed supplement which improves the intestinal microbe balance. Why use 9 strains of probiotics? The normal gut contains many different types of microbes. Probotic supplies a range of helpful organisms to greatly enhance the protective effect of normal bacteria. Probiotics can be used for many reasons in birds. For example, to re-establish the natural gut flora after infections, after stress from any cause, after diarrhea, after the use of antibiotics or while hand raising chicks from eggs. Probotic stimulates growth through the better conversion of food stuffs through improved digestion. Active ingredients:
Dosage: use just 1gram per liter of water! |
Penicillin G for Birds – Water-Soluble Antibiotic (0.155 Billion Units)
Regular price $41.95 Save $-41.95Penicillin G for Birds – Water-Soluble Antibiotic for Respiratory & Bacterial Infections
0.155 Billion Units Bird Antibiotic for Respiratory Disease & Gram-Positive Bacterial Infections
Penicillin G for birds (0.155 billion units) is a water-soluble avian antibiotic commonly used to support treatment of bacterial infections in birds, including respiratory infections and other susceptible gram-positive bacterial conditions in pigeons and cage birds.
If you are searching for penicillin for birds, bird antibiotics for respiratory infection, or a water-mix antibiotic for flock treatment, this page provides a complete overview of usage, dosing, and treatment support.
Complete Bird Antibiotic Treatment Guide
For a full breakdown of bird antibiotics, bacterial infections, and treatment options, visit:
Bird Antibiotics Guide → Penicillin, Amoxicillin, Enrofloxacin & Treatment Options
Common Uses of Penicillin G for Birds
- Respiratory bacterial infections
- Gram-positive bacterial infections
- Secondary bacterial complications
- General bacterial illness in pigeons and cage birds
Important: Penicillin G treats bacterial infections only. It is not effective against viral, fungal, or protozoal diseases.
Common Signs of Bacterial Infection in Birds
- Labored or noisy breathing
- Nasal discharge
- Lethargy
- Loss of appetite
- Reduced activity
- General signs of illness or stress
Birds with persistent respiratory or bacterial symptoms should be monitored closely during treatment.
Directions for Use
- Mix 1/4 teaspoon per 1 gallon of drinking water
- Treat for 5 consecutive days
- Provide treated water as the only drinking source
- Prepare fresh medicated water daily
Water-based dosing makes Penicillin G practical for treating multiple birds at one time.
Why Bird Owners Use Penicillin G
- Water-soluble antibiotic for flock treatment
- Supports respiratory and bacterial infection management
- Convenient daily administration through drinking water
- Commonly used in pigeons and aviary birds
After Antibiotic Use
After antibiotic treatment, many bird owners use a probiotic to help restore beneficial gut bacteria and support digestive recovery.
View Probiotic Support for Birds →
When to Consider Other Causes
If symptoms do not improve, birds may be experiencing conditions such as:
- Viral infections
- Fungal infections
- Parasitic disease
- Environmental respiratory irritation
Alternative treatment approaches may be needed depending on the underlying cause.
Frequently Asked Questions About Penicillin G for Birds
What is Penicillin G used for in birds?
Penicillin G is commonly used for susceptible bacterial infections, including respiratory and gram-positive bacterial conditions.
Can Penicillin G be mixed in drinking water?
Yes. This formulation is designed for water-soluble administration for flock or multi-bird treatment.
How long is treatment usually given?
Treatment is commonly given for 5 consecutive days unless otherwise directed.
Does Penicillin G treat parasites or fungal infections?
No. Penicillin G is for bacterial infections only.
Important Safety Notice
For animal use only.
Not for birds intended for human consumption.
Follow label directions carefully.
Keep out of reach of children.
Consult a licensed veterinarian before use.
Why Buy Penicillin G from WePetVerse?
- Specialists in bird antibiotics and avian care
- Trusted by pigeon breeders and bird owners
- Water-soluble options for practical flock treatment
- Fast and reliable shipping
Enrofloxacin 10% Tablets for Birds
Regular price $25.95 Save $-23.95Enrofloxacin 10% Tablets for Birds – Baytril Tablet Alternative for Large Birds
Bird Antibiotic Tablets for Respiratory, Mycoplasma & Systemic Infections
Enrofloxacin 10% tablets for birds are used to support treatment of bacterial infections including respiratory infections, Mycoplasma, Salmonella (Paratyphoid), and E. coli in larger avian species such as pigeons and parrots.
Commonly searched as Baytril tablets for birds, enrofloxacin is a fluoroquinolone antibiotic used in avian medicine for systemic bacterial infections under proper guidance.
Complete Bird Antibiotic Treatment Guide
For a full breakdown of antibiotic options, dosing formats, and treatment strategies, visit:
Bird Antibiotics Guide → Enrofloxacin, Baytril & Treatment Options
For comparison of liquid vs powder vs tablet forms and strength differences (2.5% vs 10%), visit:
Enrofloxacin for Birds – Complete Guide & Treatment Options
Species Guidance – Important
This tablet formulation is intended for larger birds only.
- Suitable for: Macaws, African greys, cockatoos, large parrots, pigeons
- Not recommended for: Finches, canaries, budgies, lovebirds unless directed by a veterinarian
Smaller birds typically require liquid enrofloxacin for accurate dosing.
What Enrofloxacin Tablets Are Used For
- Respiratory infections in birds
- Mycoplasma infections
- Salmonella (Paratyphoid)
- E. coli infections
- Gram-negative bacterial infections
Note: This medication is for bacterial infections only and is not effective against viral, fungal, or protozoal conditions.
Directions for Use
- 1 tablet per day for 3–5 days
Treatment Duration (General Guidance)
- Respiratory / Mycoplasma: 5–7 days
- Salmonella / E. coli: 7–10 days
Duration may vary based on condition, species, and veterinary guidance.
Tablet vs Liquid Enrofloxacin
Tablets are best for:
- Large birds
- Individual dosing
- Precise administration
Liquid enrofloxacin is preferred for:
- Small birds
- Flocks
- Water-based dosing
Why Bird Owners Choose Enrofloxacin Tablets
- Precise dosing for large birds
- No mixing required
- Effective systemic antibiotic coverage
- Common alternative to Baytril tablets
When to Consider Alternative Treatment
If symptoms do not improve, underlying conditions may include:
- Viral infections
- Fungal infections
- Parasitic infections
In these cases, different treatment approaches may be required.
Important Safety Notice
For animal use only.
Not for birds intended for human consumption.
Follow label directions carefully.
Consult a veterinarian before use.
Keep out of reach of children.
Why Buy Enrofloxacin Tablets from WePetVerse?
- Specialists in bird antibiotics and avian care
- Trusted by bird owners and breeders
- High-quality veterinary-grade products
- Fast and reliable shipping
Amtyl Antibiotic for Birds | Broad Spectrum Bird Antibiotic
Regular price $27.50 Save $-27.50Amtyl for Birds – Broad Spectrum Antibiotic Powder (Amoxicillin + Tylosin)
Water-Soluble Bird Antibiotic for Respiratory & Bacterial Infections
Amtyl for birds is a broad spectrum avian antibiotic powder formulated with Amoxicillin Trihydrate (150 mg/g) and Tylosin Tartrate (100 mg/g). It is commonly used by bird owners and breeders when addressing bacterial infections in birds, including respiratory and digestive conditions.
If you are searching for bird antibiotics, amoxicillin for birds, or a water-soluble antibiotic for aviary use, this page provides a clear overview of usage, mixing instructions, and treatment guidance.
Complete Bird Antibiotic Treatment Guide
For a full breakdown of antibiotic options, bacterial infections, and treatment strategies, visit:
Bird Antibiotics Guide → Treatment Options, Usage & Care
How to Mix Amtyl Antibiotic for Birds
Watch how Amtyl antibiotic powder is mixed into drinking water for birds. Always follow dosage instructions and veterinary guidance.
Common Uses for Amtyl in Birds
- Respiratory infections (sneezing, wheezing, discharge)
- Digestive bacterial infections
- General bacterial illness in avian species
- Situations requiring a broad spectrum antibiotic
Birds showing signs such as lethargy, nasal discharge, labored breathing, or reduced appetite may be experiencing bacterial-related conditions where antibiotics are commonly considered.
Why Bird Owners Choose Amtyl
- Dual antibiotic formula (Amoxicillin + Tylosin)
- Broad spectrum bacterial coverage
- Water-soluble for easy flock treatment
- Suitable for parrots, pigeons, finches, and canaries
- Easy daily administration through drinking water
Directions for Use – Drinking Water
- 1 gram per 8 oz (1 cup) of water
- 4 grams per 32 oz (1 quart) of water
Provide medicated water as the only water source for 5 consecutive days.
Important: Always complete the full treatment course unless otherwise directed by a veterinarian.
Crop Dosing Instructions
- Mix 3 grams into 2 teaspoons of water
- Administer 1 ml per 100g body weight
Supporting Recovery After Antibiotics
Antibiotics may temporarily affect beneficial gut bacteria. Many bird owners follow treatment with a probiotic supplement to support digestive balance and recovery.
View Probiotic Support for Birds →
Active Ingredients
- Amoxicillin Trihydrate – 150 mg/g
- Tylosin Tartrate – 100 mg/g
Storage Instructions
- Store in a cool, dry place
- Keep container tightly closed
- Protect from heat and direct sunlight
Frequently Asked Questions About Amtyl for Birds
What is Amtyl used for?
Amtyl is used to support treatment of bacterial infections in birds, including respiratory and digestive conditions.
Is Amtyl safe for all birds?
It is commonly used in many avian species. Always follow label directions and consult a veterinarian when needed.
How long should treatment last?
Typically 5 days. Complete the full course for best results.
Can I mix Amtyl in water?
Yes, it is designed to be water-soluble for easy administration.
What if symptoms do not improve?
If symptoms persist, further evaluation or alternative treatment may be necessary.
Important Safety Notice
For animal use only.
Not for human consumption.
Keep out of reach of children.
Use according to label directions.
Consult a veterinarian for proper diagnosis and treatment.
Why Buy Amtyl from WePetVerse?
- Specialists in bird antibiotics and avian care
- Carefully sourced veterinary-grade products
- Fast and reliable shipping
- Trusted by bird owners and breeders
Bromhexine Powder Generic
Regular price $24.95 Save $-22.95A highly effective drying agent of mucus in upper and lower respiratory tracts caused by infection.
Combining with a respiratory antibiotic, such as Doxycycline, is highly recommended.
Bromhexine must be combined with any antibiotic used in the treatment of respiratory disease for the first four days of treatment.
Warning: May only be used in the treatment of sick pigeons and must be withdrawn 72 hours before basketing. Do not combine with Furazolidone or Furaltadone!
How to use
1 teaspoon (5 grams) per gallon of drinking water for 4 days. Change water daily.
Tylosin Powder for Pet Birds – Tylosin Tartrate 99% Avian Antibiotic Powder 100g
Regular price $69.95 Save $-69.95Tylosin Powder for Pet Birds – Tylosin Tartrate 99% Avian Antibiotic Powder 100g
Tylosin Powder for Pet Birds is a professional avian-use powder formulated for responsible pet bird care. Each premium 100g pouch contains Tylosin Tartrate 99%, giving bird owners, breeders, and aviary keepers a clearly labeled powder-format product for organized avian care and wellness support.
Available from wepetverse.com, this product is designed for pet birds only and is suitable for structured avian care routines where a powder-format product is preferred. The resealable pouch helps protect the powder during storage, while the clear label makes it easy to identify the active ingredient, composition, net weight, directions, and important safety information.
High-Purity Tylosin Tartrate Powder for Avian Care
Tylosin Powder is a practical choice for bird keepers who prefer a clearly labeled powder product with a high-purity tylosin tartrate composition. The 99% Tylosin Tartrate formula is presented in a convenient 100g pouch, making it useful for aviary care supplies, breeder bird routines, and organized pet bird health products.
The powder format supports measured preparation according to the product label directions. Its professional packaging, bird-only positioning, and clearly displayed composition help support responsible handling, storage, and product identification.
Key Features
- Product Name: Tylosin Powder
- Active Ingredient: Tylosin Tartrate
- Composition: Tylosin Tartrate 99%
- Net Weight: 100g
- Form: Powder
- Intended Use: For pet birds only
- Packaging: Premium resealable pouch
- Store: Available at wepetverse.com
Product Details
| Product Type | Avian antibiotic powder |
| Active Ingredient | Tylosin Tartrate |
| Composition | Tylosin Tartrate 99% |
| Net Weight | 100g |
| Form | Powder |
| Use Category | Pet bird care and avian wellness support |
| Packaging Type | Premium resealable pouch |
Why Choose Tylosin Powder?
Tylosin Powder is designed for bird owners, breeders, and aviary keepers who want a professional avian powder with clear product information. The label identifies the active ingredient as Tylosin Tartrate and lists the composition as Tylosin Tartrate 99%, helping users quickly verify the product details before use.
The premium resealable pouch helps protect the powder when stored correctly, while the 100g size is convenient for organized avian supplies. Whether used in pet bird, breeder, or aviary care routines, this product should always be prepared and used according to the product label directions or guidance from a qualified avian professional.
Suitable For
- Pet birds
- Companion birds
- Aviary birds
- Pigeons
- Parrots
- Canaries
- Finches
- Cockatiels
- Parakeets
- Similar pet bird species
Directions for Use
Use only according to the directions provided on the product label or as advised by a qualified avian professional. Always measure carefully, prepare as directed, and follow all safety instructions printed on the package.
Storage Information
- Store in a cool, dry place.
- Keep the pouch sealed when not in use.
- Protect from moisture, direct sunlight, and excessive heat.
- Keep away from children and pets.
Important Safety Notice
For pet birds only. Not for human consumption. Do not use on livestock or animals intended for human consumption. Keep away from children and pets. Always follow the product label directions and consult a qualified avian professional when needed.
Frequently Asked Questions
What is Tylosin Powder?
Tylosin Powder is an avian-use powder formulated for pet birds. It contains Tylosin Tartrate 99% and is intended for responsible bird care and wellness support.
What is the active ingredient?
The active ingredient is Tylosin Tartrate.
What is the composition of this product?
The label lists the composition as Tylosin Tartrate 99%.
What is the net weight?
Each pouch contains 100g of Tylosin Powder.
Is this product for pet birds only?
Yes. This product is intended for pet birds only. It is not intended for human use, livestock, or animals intended for food production.
Can Tylosin Powder be used for pigeons, parrots, canaries, and finches?
This product is labeled for pet birds and may be used in avian care settings according to the product label directions. Always follow the label and seek professional avian guidance when needed.
How should this powder be stored?
Store in a cool, dry place, keep the pouch sealed when not in use, and protect it from moisture, sunlight, and heat.
Is this product safe for humans?
No. Tylosin Powder is not for human consumption and should never be used by people.
Should I follow the label directions?
Yes. Always follow the product label directions carefully and use accurate measuring practices when preparing the product.
VetraSeb C - 4% Chlorhexidine Shampoo - 16 oz.
Regular price $26.49 Save $-26.49VetraSeb C - 4% Chlorhexidine Shampoo - 16 oz.
Soap-free chlorhexidine shampoo for dogs and cats, formulated for skin infections responsive to chlorhexidine.
- SKU: VT-10118
- Category: Antibacterial and Antifungal Shampoos
TrizCHLOR 4 Anti-Bacterial Wipes for Dogs & Cats 50 Wipes
Regular price $39.40 Save $-39.40TrizCHLOR 4 Wipes
by Dechra Veterinary Labs
Much more effective than using products with only Chlorhexidine!
Trizchlor 4 wipes are unique wipes with the patented tris-EDTA formula that enhances the bacteria-killing ability of Chlorhexidine wipes of choice for knocking down resistant bacteria.
TrizCHLOR 4 Wipes are safe for use on Dogs, Cats, and Horses with skin conditions responsive to chlorhexidine.
TrizCHLOR 4 aqueous skin wipes for dogs and cats are a powerful and easy-to-use microbial treatment for your pet's skin health. TrizCHLOR 4 aqueous wipes have been clinically designed to remove bacterial infections of all types and varieties from your cat or dog 's skin. The wipe format of TrizCHLOR 4 means that you can apply the medicine directly where it's needed the most on your pet's skin, such as visible bacterial infections.
TrizCHLOR 4 wipes contain 4% chlorhexidine and Tris-EDTA in a synergistic formula treatment that is capable of eliminating most gram-positive and gram-negative bacterial infections on your pet's skin. Chlorhexidine helps to eliminate pyoderma and treatment-resistant strains such as MRSA. TrisEDTA breaks down bacterial cell walls. Together, these chemicals offer comprehensive skin health protection for your dog or cat.
If you want a simple way to clean your pet's skin of bacterial infections and restore skin health to your dog or cat, then try TrizCHLOR 4 Aqueous Wipes today!
For Best Results
If necessary, wash first with TrizCHLOR 4 Shampoo™ or other medicated shampoo.
TrizEDTA (USP), 4Chlorhexidine
TrizCHLOR 4 Wipes are useful in the treatment of gram-positive and gram-negative organisms by combining the best qualities of tris-EDTA and chlorhexidine solution. This product may be used for antibiotic resistant bacterial treatment failures and /or resistant bacterial infections (pyoderma, antibiotic resistant staph infections, etc). TrizCHLOR 4 Wipes are ready to use aqueous wipes for dogs & cats. Wipes are alkalinizing and preservative free.
DIRECTIONS:
Apply TrizCHLOR Wipes liberally to affected area, gently but firmly massage. Repeat as necessary or as directed by a veterinarian.
CONTAINS:
Wipes saturated with a solution containing Tromethamine (Tris) USP, Edetate Disodium Dihydrate (EDTA) USP, 4% Chlorhexidene Gluconate buffered to pH 8 with Tromethamine HCL and deionized water.
Terramycin Antibiotic Ophthalmic Ointment 3.5 Gram
Regular price $45.99 Save $-12.49Terramycin Antibiotic Ophthalmic Ointment
by Zoetis
For dogs & cats.
Terramycin Eye Ointment is a topical antibiotic mix for mild bacterial eye infections in cats, dogs, and horses and small animals.
Used as a local treatment for conjunctivitis and secondary bacterial inflammatory conditions of the eye.
This broad-spectrum defense combines the potent antibiotics Oxytetracycline and Polymyxin B in a special petroleum base.
INGREDIENTS
Terramycin Ophthalmic Ointment with Polymyxin B Sulfate is a suspension of oxytetracycline hydrochloride and polymyxin B sulfate in a special petrolatum base.
Each gram of ointment contains oxytetracycline HCI equivalent to 5 mg of oxytetracycline and 10,000 units of polymyxin B as the sulfate.
ADMINISTRATION
Terramycin Ophthalmic Ointment with Polymyxin B Sulfate should be administered topically to the eye 2-4 times daily.
To apply ointment
Place a small amount under upper eyelid and the ointment will spread quickly over the entire surface of the eye.
PACKAGE INCLUDES
1/8 oz Tube of Terramycin Antibiotic Ophthalmic Ointment
TrizCHLOR 4 Antimicrobial Ear Flush for Dogs and Cats 4 Oz
Regular price $39.99 Save $-39.99TrizCHLOR Flush
by Dechra Veterinary Labs
Antimicrobial flush formulated for dogs and cats.
For support of healthy skin for animals with conditions responsive to chlorhexidine.
Active Ingredients:
0.15% Chlorhexidine Gluconate
TrizEDTA (tromethamine USP, disodium EDTA dihydrate)
Directions for Use:
Shake well.
For use as an ear flush: apply to the ear canal and gently, but firmly, massage the base of the ear.
For use on skin: Squeeze flush over the affected area. Use a cotton ball to remove excess solution.
Repeat as necessary or as directed by your veterinarian. Close cap tightly.
Caution:
For topical use only. Avoid contact with eyes. If skin irritation develops or increases, stop use and call your veterinarian. Keep out of the reach of children and pets. Wash hands after use.
Store at controlled room temperature of 15-30° C (59-86° F).
Tony’s Treasure Tablets Vetafarm 100 Tablets
Regular price $59.99 Sale price $49.99 Save $10.00Tony’s Treasure Tablets (Vetafarm) – Broad-Spectrum Antibiotic for Birds
Tony’s Treasure Tablets by Vetafarm are a professional-grade, broad-spectrum antibiotic designed to treat bacterial, respiratory, and intestinal infections in birds. Developed by avian veterinarians, this formulation provides safe and effective relief from infections commonly affecting parrots, pigeons, finches, and other ornamental birds.
Product Overview
These easy-to-use tablets deliver reliable infection control for both gram-positive and gram-negative bacteria. Ideal for use during times of stress, illness, or recovery, Tony’s Treasure supports improved appetite, feather condition, and vitality in affected birds. It’s a go-to solution among breeders and bird owners for maintaining flock health.
Key Benefits
- Broad-spectrum antibiotic effective against major avian bacteria
- Treats respiratory, intestinal, and systemic infections
- Gentle on the digestive system and safe for prolonged use
- Convenient tablet form for easy, accurate dosing
- Trusted Vetafarm quality backed by veterinarians
Dosage & Administration
Administer one tablet per 100 g of body weight daily for 5–7 days or as directed by your veterinarian. For flock treatment, tablets can be crushed and dissolved into drinking water. Continue full treatment even after visible improvement to prevent relapse.
Storage Instructions
Store in a cool, dry place below 30 °C (86 °F). Keep away from direct sunlight and moisture. For avian use only. Keep out of reach of children.
Why Choose WePetVerse
wepetverse.com offers authentic Vetafarm bird medications sourced directly from trusted manufacturers. Our products are handled under controlled conditions and shipped quickly across the USA to ensure maximum freshness and effectiveness.
Disclaimer
For ornamental and companion birds only. Not for use in animals intended for human consumption. Always follow the dosage directions provided by your veterinarian.
Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 200 Gallons
Regular price $49.99 Save $-49.99Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 200 Gallons
Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 200 Gallons is a tetracycline-class antibacterial powder for ornamental fish with label-listed conditions involving susceptible gram-positive and gram-negative bacteria. This size provides label-directed coverage for up to 200 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Supports label-directed care for raised scales, swollen belly, swim bladder inflammation and bloody fins or scales.
- Relevant to listed concerns associated with Aeromonas, Pseudomonas and myxobacterial organisms.
- Can be administered through aquarium water or incorporated into feed according to the current label.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Raised scales
- Swollen belly
- Swim bladder inflammation
- Bloody fins
- Bloody scales
- Gill disease
- Marine ulcer disease
- Hemorrhagic septicemia
- Aeromonas
- Pseudomonas
- Myxobacterial infection
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water before measuring the powder.
- Use 1/4 teaspoon per 20 gallons every 24 hours.
- Complete a 25% water change before each repeat treatment.
- For label-directed feed use, mix 2 teaspoons or 1.2 grams per pound of food for 14–21 days.
- Calcium and magnesium can bind oxytetracycline. Consider water hardness and pH; when pH is 8.0 or higher or water is hard, the label suggests administration in food.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Use a hospital aquarium whenever possible and monitor ammonia, nitrite, pH and hardness throughout the treatment period.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 200 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons
Regular price $89.99 Save $-89.99Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons
Oxytetracycline Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons is a tetracycline-class antibacterial powder for ornamental fish with label-listed conditions involving susceptible gram-positive and gram-negative bacteria. This size provides label-directed coverage for up to 1,000 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Supports label-directed care for raised scales, swollen belly, swim bladder inflammation and bloody fins or scales.
- Relevant to listed concerns associated with Aeromonas, Pseudomonas and myxobacterial organisms.
- Can be administered through aquarium water or incorporated into feed according to the current label.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Raised scales
- Swollen belly
- Swim bladder inflammation
- Bloody fins
- Bloody scales
- Gill disease
- Marine ulcer disease
- Hemorrhagic septicemia
- Aeromonas
- Pseudomonas
- Myxobacterial infection
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water before measuring the powder.
- Use 1/4 teaspoon per 20 gallons every 24 hours.
- Complete a 25% water change before each repeat treatment.
- For label-directed feed use, mix 2 teaspoons or 1.2 grams per pound of food for 14–21 days.
- Calcium and magnesium can bind oxytetracycline. Consider water hardness and pH; when pH is 8.0 or higher or water is hard, the label suggests administration in food.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Use a hospital aquarium whenever possible and monitor ammonia, nitrite, pH and hardness throughout the treatment period.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 1,000 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 200 Gallons
Regular price $49.99 Save $-49.99Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 200 Gallons
Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 200 Gallons is a concentrated nitrofurazone antibacterial powder for ornamental fish with label-listed external bacterial signs involving skin, fins, sores and ulcers. This size provides label-directed coverage for up to 200 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Supports label-directed care for red body areas, streaking, peeling tissue, open ulcers and wasting.
- Commonly considered for myxobacterial concerns, fin and tail rot, open sores and Vibrio-related signs.
- The current label also includes a separate dip-treatment method for controlled short-duration exposure.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Open ulcers
- Open sores
- Fin rot
- Tail rot
- Red body streaks
- Red areas
- Peeling skin
- White body
- Wasting disease
- Myxobacterial infection
- Vibrio anguillarum
- Bacterial infection
- Dermal fungus
- Shipping injury complications
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water and verify the actual treatment volume.
- Use 1/4 teaspoon per 30 gallons of aquarium water.
- A dose may be repeated after 24 hours after completing a 25–50% water change.
- The label describes a treatment period of 5–10 days.
- For dip treatment, follow the label exactly: 189–756 mg per 10 gallons for 1 hour, repeated daily for up to 10 days.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Monitor ammonia and nitrite throughout use, treat in a hospital aquarium when possible and protect the powder from heat, moisture and bright light.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 200 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 1,000 Gallons
Regular price $89.99 Save $-89.99Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 1,000 Gallons
Nitrofurazone Fish Antibiotic Powder for Ulcers & Fin Rot – 1,000 Gallons is a concentrated nitrofurazone antibacterial powder for ornamental fish with label-listed external bacterial signs involving skin, fins, sores and ulcers. This size provides label-directed coverage for up to 1,000 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Supports label-directed care for red body areas, streaking, peeling tissue, open ulcers and wasting.
- Commonly considered for myxobacterial concerns, fin and tail rot, open sores and Vibrio-related signs.
- The current label also includes a separate dip-treatment method for controlled short-duration exposure.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Open ulcers
- Open sores
- Fin rot
- Tail rot
- Red body streaks
- Red areas
- Peeling skin
- White body
- Wasting disease
- Myxobacterial infection
- Vibrio anguillarum
- Bacterial infection
- Dermal fungus
- Shipping injury complications
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water and verify the actual treatment volume.
- Use 1/4 teaspoon per 30 gallons of aquarium water.
- A dose may be repeated after 24 hours after completing a 25–50% water change.
- The label describes a treatment period of 5–10 days.
- For dip treatment, follow the label exactly: 189–756 mg per 10 gallons for 1 hour, repeated daily for up to 10 days.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Monitor ammonia and nitrite throughout use, treat in a hospital aquarium when possible and protect the powder from heat, moisture and bright light.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 1,000 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 1,000 Gallons
Regular price $99.99 Save $-99.99Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 1,000 Gallons
Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 1,000 Gallons is a water-soluble neomycin sulfate antibacterial powder for ornamental fish showing label-listed signs associated with susceptible bacterial organisms. This size provides label-directed coverage for up to 1,000 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Commonly selected for open sores, fin and body rot, internal swelling and loss of color.
- Relevant to label-listed concerns associated with Aeromonas, Pseudomonas and Myxobacteria.
- Can be applied in treatment water or prepared with feed according to the current product label.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Open sores
- Fin rot
- Body rot
- Internal swelling
- Loss of color
- Body distortion
- Guppy disease
- Furunculosis
- Columnaris
- Popeye
- Gourami disease
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Prepare and condition the aquarium water before adding the powder.
- Use 1/4 teaspoon for each 10 gallons of actual treatment water.
- Repeat once every 24 hours for at least 3 days, completing an approximately one-third water change before each new dose.
- For label-directed medicated feed, use 1.5 grams per pound of fish food daily for 10 days.
- Do not combine with copper sulfate. Use a separate hospital or quarantine aquarium whenever practical.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Monitor ammonia and nitrite closely because repeated antibacterial dosing may affect aquarium stability and biological filtration.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 1,000 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 200 Gallons
Regular price $59.99 Save $-59.99Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 200 Gallons
Neomycin Sulfate Fish Antibiotic Powder for Fin Rot & Sores – 200 Gallons is a water-soluble neomycin sulfate antibacterial powder for ornamental fish showing label-listed signs associated with susceptible bacterial organisms. This size provides label-directed coverage for up to 200 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Commonly selected for open sores, fin and body rot, internal swelling and loss of color.
- Relevant to label-listed concerns associated with Aeromonas, Pseudomonas and Myxobacteria.
- Can be applied in treatment water or prepared with feed according to the current product label.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Open sores
- Fin rot
- Body rot
- Internal swelling
- Loss of color
- Body distortion
- Guppy disease
- Furunculosis
- Columnaris
- Popeye
- Gourami disease
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Prepare and condition the aquarium water before adding the powder.
- Use 1/4 teaspoon for each 10 gallons of actual treatment water.
- Repeat once every 24 hours for at least 3 days, completing an approximately one-third water change before each new dose.
- For label-directed medicated feed, use 1.5 grams per pound of fish food daily for 10 days.
- Do not combine with copper sulfate. Use a separate hospital or quarantine aquarium whenever practical.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
Monitor ammonia and nitrite closely because repeated antibacterial dosing may affect aquarium stability and biological filtration.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 200 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Megabac-S (Vetafarm) – Antifungal Treatment for Birds & Pigeons
Regular price $179.95 Sale price $169.95 Save $10.00Megabac-S (Vetafarm) – Advanced Antifungal & Digestive Treatment for Birds
Megabac-S by Vetafarm is a powerful antifungal and antibacterial medication formulated to treat and prevent infections caused by Megabacteria (Avian Gastric Yeast) and other harmful organisms in birds. It is one of the most trusted solutions for improving gut health and preventing wasting disease in parrots, pigeons, and other aviary birds.
Product Overview
This professional-grade treatment contains Amphotericin B, a potent antifungal agent that acts directly on the digestive tract, eliminating fungal and yeast infections while restoring healthy intestinal flora. Megabac-S also supports appetite recovery and weight maintenance in birds suffering from chronic digestive infections.
Key Benefits
- Effectively treats Megabacteria (Avian Gastric Yeast) infections
- Supports digestive balance and nutrient absorption
- Improves appetite, feather quality, and weight gain
- Safe for long-term use under veterinary supervision
- Vetafarm formulation trusted by avian veterinarians worldwide
Dosage & Administration
Mix 1 g per 200 ml of drinking water and provide as the sole source of water for 10–14 days or as directed by your veterinarian. For severe cases, treatment may be extended. Fresh medicated water should be prepared daily.
Storage Instructions
Store below 30 °C (86 °F) in a cool, dry area. Keep tightly closed and away from direct sunlight. For avian use only. Not for human consumption.
Why Choose WePetVerse
At wepetverse.com, we provide authentic Vetafarm medications sourced directly from trusted distributors. Our Megabac-S is stored under optimal conditions to ensure freshness, safety, and full therapeutic potency upon arrival.
Disclaimer
For ornamental and companion birds only. Always consult your veterinarian before beginning any treatment for fungal or bacterial infections.
Medistatin Antifungal Treatment for Birds
Regular price $69.95 Sale price $59.95 Save $10.00Medistatin – Safe & Effective Antifungal Treatment for Birds
Medistatin is a highly effective, veterinary-formulated antifungal powder developed to treat fungal infections such as Candida albicans, thrush, and yeast overgrowth in birds. It is especially useful for treating fungal conditions caused by stress, poor diet, or prolonged antibiotic use. Medistatin is trusted by avian veterinarians and breeders worldwide for its safety and reliable performance.
Product Overview
Containing the active ingredient Nystatin, Medistatin works by inhibiting the growth of fungal organisms in the digestive system and oral cavity. It helps restore normal gut balance and supports better nutrient absorption, leading to improved energy, feather quality, and overall health. Ideal for parrots, pigeons, finches, canaries, and exotic birds of all sizes.
Key Benefits
- Highly effective treatment for yeast and fungal infections (Candida, Thrush)
- Restores digestive health and supports beneficial gut bacteria
- Safe for long-term use under veterinary supervision
- Can be used during or after antibiotic therapy to prevent fungal overgrowth
- Trusted by avian vets and breeders worldwide
Dosage & Administration
Mix 1 g per 200 g of soft food and feed once daily for 5–7 days or as prescribed by your veterinarian. For severe infections, treatment may continue for up to 14 days. Always prepare fresh food daily.
Storage Instructions
Store below 25 °C (77 °F) in a dry location, away from direct sunlight. Keep the container tightly closed after each use. For avian use only. Keep out of reach of children.
Why Choose WePetVerse
wepetverse.com offers authentic, vet-approved bird medications sourced directly from trusted manufacturers. Our antifungal and antibiotic lines are stored under professional conditions to preserve their full potency until delivery.
Disclaimer
This product is intended for ornamental and companion birds only. Always consult your veterinarian before use, especially when combining with antibiotic therapy.
Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 200 Gallons
Regular price $49.99 Save $-49.99Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 200 Gallons
Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 200 Gallons is a broad-spectrum kanamycin sulfate powder for ornamental aquarium fish, including many scaleless species when the current label directions are followed. This size provides label-directed coverage for up to 200 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Provides label-listed activity against gram-positive and gram-negative bacterial concerns.
- Commonly considered for fin and tail rot, mouth damage, cloudy eyes, popeye and related infections.
- May be administered through aquarium water, with label guidance also available for medicated pellets.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Fin rot
- Tail rot
- Mouth fungus
- Mouth sores
- Eye sores
- Cloudy eyes
- Protruding eyes
- Popeye
- Molly disease
- Tetra disease
- Cyanobacteria
- Red slime
- Hemorrhagic septicemia
- Aeromonas
- Pseudomonas
- Myxobacteria
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water and calculate the true treatment volume before dosing.
- Use 1/4 teaspoon for each 20 gallons of water.
- Repeat every 24 hours after completing a 25% water change.
- Continue for 5–7 days. The label recommends half the standard amount for especially sensitive fish such as tetras and neons.
- Monitor ammonia and nitrite throughout the course because kanamycin may interfere with biological filtration.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
A dedicated hospital aquarium is strongly preferred so filtration, water quality and fish response can be observed without exposing the full display system.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 200 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons
Regular price $89.99 Save $-89.99Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons
Kanamycin Sulfate Broad-Spectrum Fish Antibiotic Powder – 1,000 Gallons is a broad-spectrum kanamycin sulfate powder for ornamental aquarium fish, including many scaleless species when the current label directions are followed. This size provides label-directed coverage for up to 1,000 gallons when measured and applied according to the current product label.
Key Aquarium Treatment Features
- Provides label-listed activity against gram-positive and gram-negative bacterial concerns.
- Commonly considered for fin and tail rot, mouth damage, cloudy eyes, popeye and related infections.
- May be administered through aquarium water, with label guidance also available for medicated pellets.
Label-Listed Fish Health Concerns
This product may be considered when the visible signs and the current label are consistent with concerns such as:
- Fin rot
- Tail rot
- Mouth fungus
- Mouth sores
- Eye sores
- Cloudy eyes
- Protruding eyes
- Popeye
- Molly disease
- Tetra disease
- Cyanobacteria
- Red slime
- Hemorrhagic septicemia
- Aeromonas
- Pseudomonas
- Myxobacteria
- Bacterial infection
Visible symptoms do not confirm a diagnosis. Similar signs may result from poor water quality, parasites, fungus, injury, toxins or environmental stress. Correct the aquarium environment and seek qualified aquatic guidance when the cause is uncertain.
Dosage and Application Directions
- Condition the aquarium water and calculate the true treatment volume before dosing.
- Use 1/4 teaspoon for each 20 gallons of water.
- Repeat every 24 hours after completing a 25% water change.
- Continue for 5–7 days. The label recommends half the standard amount for especially sensitive fish such as tetras and neons.
- Monitor ammonia and nitrite throughout the course because kanamycin may interfere with biological filtration.
Label priority: Always compare these listing details with the instructions printed on the bottle you receive. The physical product label controls the amount, frequency, duration, compatibility and storage requirements.
Prepare the Treatment Aquarium
- Calculate dosage from the aquarium’s actual water volume, not its advertised capacity.
- Use a separate hospital or quarantine tank whenever practical.
- Test ammonia and nitrite before treatment and throughout the complete course.
- Remove activated carbon, UV or other equipment only when the current label directs you to do so.
- Maintain stable temperature and strong aeration while observing the fish closely.
A dedicated hospital aquarium is strongly preferred so filtration, water quality and fish response can be observed without exposing the full display system.
Coverage and Product Format
The concentrated powder format is designed for accurate measuring in a controlled treatment system. This package treats up to 1,000 gallons at the label-directed rate, making the coverage easy to compare with your hospital tank, quarantine aquarium or ornamental pond treatment volume.
wepetverse.com Product Information
wepetverse.com organizes aquarium treatments by active ingredient, intended use and total gallon coverage so fish keepers can compare products without relying only on brand nicknames. Review the current label, calculate actual water volume and select treatment according to the likely cause rather than symptoms alone.
Important Safety Notice
For ornamental aquarium and ornamental pond fish only. Not for human use or consumption. Do not use on fish intended for human consumption. Keep tightly closed and protected from children, animals, moisture, excessive heat and direct light. Use only as directed and consult a qualified aquatic veterinarian or fish-health professional when the condition is severe, recurring or unclear.
Fish Zole Metronidazole 250mg & 500mg | Fish Antibiotic
Regular price $40.99 Save $-40.99Fish Zole Metronidazole 250mg & 500mg | Fish Antibiotic
Fish Zole (Fix Zole) is a metronidazole antibacterial treatment in tablet form for ornamental aquarium fish and non-food pet birds.
Each tablet supplies 250 mg or 500 mg of metronidazole and is made in the United States by Aqua Soma Labs. Hobbyists commonly use it to help manage suspected protozoan problems in a hospital or quarantine tank, where dosing and observation are easier to control.
Aquarists have known this metronidazole tablet under earlier names, including the discontinued Thomas Labs Fish Zole and Fish Zole Forte, Aqua-Zole, fishzole, and fishbiotic metronidazole.
Fix Zole is the current Aqua Soma Labs version, replacing those older products with the same metronidazole strengths of 250 mg or 500 mg per tablet. Keepers who previously used MetroPlex may find this a convenient tablet-based option.
Hobbyists use Fix Zole to help manage internal parasites and intestinal protozoan flagellates such as Hexamita and Spironucleus.
These problems can appear through feeding changes, unusual droppings, weight loss, behavioral changes, or visible physical signs in certain freshwater fish.
Metronidazole works against certain protozoa and anaerobic organisms. When used as directed, it can form part of a broader care plan that includes stable water quality, reduced stress, and appropriate nutrition.
It is not intended for ich or flukes, and it is not normally the first choice for typical fin rot unless the underlying cause has been confirmed by an aquatic professional.
Fix Zole from Aqua Soma Labs delivers 250 mg or 500 mg of metronidazole per tablet in 60-count bottles with fresh expiration dates.
Choose the tablet strength that matches your treatment-tank volume and treatment plan. Tablets may be pre-dissolved in a small cup of aquarium water before being added evenly to the treatment tank.
Use Fix Zole when fish or pet birds show signs that may be associated with protozoan flagellates or anaerobic-sensitive problems.
Fish-Specific Symptoms
- Loss of appetite or gradual weight loss
- White, stringy droppings
- Hole-in-the-head lesions or pits along the head and lateral line
- Malawi bloat or cichlid bloat
- Swollen abdomen
- Faded color, darkening, or body discoloration
- Lethargy, hiding, or reduced activity
- Sudden decline in cichlids or discus associated with Hexamita or Spironucleus
Bird-Specific Symptoms Under Avian Veterinary Guidance
- Yellow plaques in the throat or crop
- Canker or trichomonosis
- Pigeon canker, especially in racing pigeons
- Frounce in falcons, hawks, owls, and other raptors
- Loose or watery droppings possibly associated with giardia
- Reduced appetite or weight loss
- Difficulty swallowing or visible discomfort while eating
- Fluffed-up feathers or lethargy
Supporting treatment with clean water, stable temperature, low stress, and appropriate husbandry helps reduce setbacks and improve outcomes.
For pet birds, always confirm the diagnosis with an avian veterinarian before administering metronidazole.
Order online: Fix Zole ships from our United States warehouse the same business day according to the current order-processing schedule.
Fish Zole vs Fix Zole: What Changed?
If you previously used Thomas Labs Fish Zole, Fish Zole Forte, or Aqua-Zole by Aqua Soma Labs, here is what you need to know about Fix Zole.
Same as Fish Zole, Fish Zole Forte, and Aqua-Zole
Fix Zole uses the same metronidazole that hobbyists relied on under the Thomas Labs Fish Zole, Fish Zole Forte, and Aqua Soma Labs Aqua-Zole names.
New Fix Product Line
Fix Zole is produced by Aqua Soma Labs, which now manufactures the Fix line after Thomas Labs discontinued its Fish Zole products.
Same 60-Count Bottles
Each bottle contains 60 tablets. Choose between the 250 mg and 500 mg strengths according to the treatment-tank size and plan.
Updated Packaging, Same Formula
The brand name, bottle design, and label have changed, while the metronidazole tablet strengths remain familiar.
Benefits of Fix Zole for Fish & Birds
Targeted Protozoan Support
Commonly used to help manage internal parasites and protozoan flagellates such as Hexamita and Spironucleus, which may be associated with appetite loss, weight loss, white stringy droppings, Malawi bloat, and hole-in-the-head symptoms.
Stocked and Ready to Ship
Fix Zole ships from a United States warehouse according to the current processing schedule, helping aquarium keepers obtain treatment quickly when concerning signs appear.
Avian Vet-Guided Option
In non-food pet birds, metronidazole may be used under avian veterinary guidance for specific protozoal concerns such as giardia, frounce, and pigeon canker caused by trichomonosis.
Flexible 250 mg or 500 mg Tablets
Choose the strength that fits your treatment setup. A consistent amount per tablet helps aquarium keepers scale treatment across different tank volumes.
Ideal for Hospital Tanks and Quarantine
A separate hospital tank makes observation and dosing easier while helping protect the display aquarium's biological filter and sensitive tank mates.
Fits a Complete Care Plan
Treatment works best when combined with stable temperature, clean water, appropriate feeding, good aeration, and reduced environmental stress.
Targeted, Not a One-Size-Fits-All Remedy
Fix Zole is not normally used for ich, gill flukes, Costia, fungus, or ordinary fin rot unless the cause has been professionally identified.
Usage Guidelines & Instructions
Set Up a Separate Treatment Area
Move affected fish to a dedicated hospital or quarantine tank whenever possible.
This allows you to monitor behavior, control dosing more precisely, and reduce unnecessary exposure in the main display aquarium.
Directions for Fish Aquariums
Pre-dissolve the tablet in a small cup of aquarium water, then distribute the prepared solution evenly across the treatment tank.
250 mg strength: Add one 250 mg tablet per 10 gallons or 38 litres of treatment water.
500 mg strength: Add one 500 mg tablet per 20 gallons or 76 litres of treatment water.
Repeat the dose every 24 hours and perform a partial water change between treatments.
Adjust the Filtration
Remove activated carbon and other chemical filtration media during treatment.
Keep strong aeration running because activated carbon can reduce the amount of metronidazole available in the treatment water.
Continue Treatment and Monitor Results
Continue daily treatment for 5 to 10 days and do not exceed 10 days unless specifically directed by a qualified aquatic veterinarian.
If there is no improvement within five days, discontinue treatment and consult an aquatic professional.
Use in Pet Birds Under Veterinary Guidance
Administer metronidazole to non-food pet birds only under the direction of an avian veterinarian.
The veterinarian should confirm the diagnosis and determine the amount, frequency, and duration based on the bird's species, weight, and condition.
Tablets may be given whole, divided, or crushed into soft food only as specifically instructed.
Fix Zole Amounts by Aquarium Size
| Tank volume | Metronidazole per use | 250 mg tablets | 500 mg tablets |
|---|---|---|---|
| 10 gallons (38 L) | 250 mg | 1 tablet | Not applicable |
| 20 gallons (76 L) | 500 mg | 2 tablets | 1 tablet |
| 30 gallons (114 L) | 750 mg | 3 tablets | 1 tablet plus one 250 mg tablet |
| 40 gallons (151 L) | 1,000 mg | 4 tablets | 2 tablets |
| 55 gallons (208 L) | Approximately 1,375 mg | 5 to 6 tablets | Approximately 3 tablets |
What to Expect During Treatment
Days 1 to 2
Fish may hide or eat less while treatment begins. Maintain the schedule and keep aeration strong.
Days 3 to 5
Look for improving appetite, more normal droppings, and steadier activity. Stop and seek professional advice if the fish worsen or no change is seen by day five.
Days 5 to 10
Complete the recommended treatment period even when improvement appears. After treatment, perform a partial water change and restore activated carbon.
What You Need Before You Start
Prepare the following supplies before administering the first treatment:
- A separate hospital or quarantine tank
- A suitable heater
- An air stone or established sponge filter
- An ammonia and nitrite test kit
- Aquarium dechlorinator
- A small net for gentle transfer
- A clean cup for pre-dissolving each tablet
Pro Tip: After treatment, perform a partial water change and reintroduce activated carbon, if normally used, to help clear remaining treatment from the aquarium water.
How Fix Zole Works
Fix Zole uses metronidazole, an ingredient aquarium keepers have relied on for years for certain protozoan and anaerobic-sensitive problems.
In practical terms, metronidazole works against specific protozoa and anaerobic organisms, giving affected fish a better opportunity to recover when the underlying condition is susceptible to it.
This is why aquarium keepers use it when they suspect intestinal flagellates such as Hexamita and Spironucleus rather than for ich, flukes, fungal problems, or typical fin rot.
Each tablet also contains standard inactive ingredients that help hold the tablet together, support storage stability, and allow the tablet to disperse when mixed with water.
The exact inactive ingredient list may vary by batch and may not always be publicly listed.
Safety and Tank Notes
When used as directed, Fix Zole usually causes no problems in ornamental aquarium fish and non-food pet birds.
Incorrect amounts, extended treatment, unnecessary repeat treatments, or combining multiple products can increase stress and the risk of unwanted effects.
Fish
Possible reactions include temporarily reduced appetite, mild lethargy, or hiding behavior.
If severe distress develops, including rapid gill movement, loss of balance, surface gasping, or lying on the bottom, stop treatment, increase aeration, perform a partial water change, and seek aquatic veterinary advice.
Birds
Use metronidazole only under avian veterinary guidance.
Possible reactions may include reduced appetite, loose or changed droppings, and lethargy, particularly if the bird is sensitive or the administered amount is incorrect.
If the bird becomes fluffed up, inactive, or stops eating, discontinue use and contact an avian veterinarian.
Invertebrates
Sensitivity can vary between shrimp, snails, corals, and other invertebrates.
Whenever possible, treat fish in a separate hospital tank rather than dosing a display aquarium containing sensitive invertebrates.
Safe Use in Your System
Do not combine Fix Zole with other treatments unless advised by a qualified professional.
Avoid routine preventative use. If symptoms persist or return, confirm the diagnosis before repeating treatment.
Storage & Handling
Store Fix Zole at a controlled room temperature of 59–86°F or 15–30°C in a cool, dry place.
Keep the container tightly closed to protect the tablets from moisture and light.
Keep out of reach of children and pets.
Important Safety Warning: Fix Zole is intended for ornamental aquarium fish and non-food pet birds only. It is not for animals raised for food. Always follow current label directions.
Shipping & Returns
Shipping Policy
Orders ship from our United States warehouse within one business day through USPS or UPS.
Shipping rates and estimated delivery times are calculated at checkout.
Review Shipping Policy →Refund Policy
If there is an issue with your order, eligible items may be returned or exchanged within 30 days according to the current store guidelines.
Review the refund policy before sending any product back.
Review Refund Policy →Frequently Asked Questions
What is Fix Zole used for in aquarium fish and pet birds?
Fix Zole contains metronidazole and is used for certain protozoan and anaerobic-sensitive problems in ornamental fish. These may include Hexamita, Spironucleus, white stringy droppings, internal flagellates, Malawi bloat, and hole-in-the-head symptoms.
Use in non-food pet birds should occur only under avian veterinary guidance.
What is in Fix Zole?
Each tablet contains either 250 mg or 500 mg of metronidazole. Both strengths are supplied in 60-count bottles.
What does metronidazole treat in fish?
Metronidazole is generally used against certain internal protozoa, intestinal flagellates, and anaerobic organisms. It is commonly associated with treatment plans for Hexamita and Spironucleus in susceptible ornamental fish.
Is Fix Zole the same as Fish Zole or Fish Zole Forte?
Fix Zole is presented as the current Aqua Soma Labs replacement for the discontinued Fish Zole and Fish Zole Forte products. The familiar 250 mg and 500 mg metronidazole tablet strengths remain available.
Is Fix Zole the same as Aqua-Zole by Aqua Soma Labs?
Fix Zole is the updated Fix-brand version of the metronidazole tablets previously sold under names such as Aqua-Zole.
Will Fix Zole harm my tank's biological filter?
Treatment may disturb aquarium balance, particularly when used in a display aquarium. A separate hospital tank is preferred, and ammonia and nitrite should be monitored throughout treatment.
How do I choose between 250 mg and 500 mg tablets?
Choose the strength according to the treatment-tank volume. The supplied guide uses one 250 mg tablet per 10 gallons or one 500 mg tablet per 20 gallons.
Can I give Fix Zole to my dog or cat?
No. This product is labeled for ornamental aquarium fish and non-food pet birds. It is not intended for dogs, cats, humans, or food-producing animals.
Does metronidazole help with hole-in-the-head symptoms?
Aquarium keepers commonly use metronidazole when hole-in-the-head symptoms are suspected to involve intestinal flagellates such as Hexamita or Spironucleus. Similar lesions may have other causes, so diagnosis is important.
Will Fix Zole treat ich or gill flukes?
Fix Zole is not normally used for ich, white spot disease, or gill flukes. Those conditions generally require different treatment approaches.
Can Fix Zole treat fin rot or other bacterial infections?
Fix Zole is not normally the first choice for typical fin rot. It is more commonly used for certain protozoan flagellates and anaerobic-sensitive problems.
Can I use Fix Zole as routine prevention?
Routine preventative use is not recommended. Treatment should be based on observed symptoms, the product label, and professional guidance when the diagnosis is uncertain.
How long should I treat with Fix Zole?
The supplied directions describe treatment every 24 hours for 5 to 10 days, without exceeding 10 days. Follow the current bottle label and discontinue if no improvement is seen within five days.
How much metronidazole do I use per gallon?
The supplied reference is 250 mg per 10 gallons, approximately 25 mg per gallon. Pre-dissolve the tablet in aquarium water and dose according to the actual water volume of the treatment tank.
Is Fix Zole safe in saltwater tanks?
Fix Zole is presented for freshwater and saltwater treatment tanks. A separate hospital tank is recommended, especially when the display aquarium contains corals or other invertebrates.
Is Fix Zole reef-safe or safe with shrimp and snails?
Sensitivity varies by species. Treat fish separately whenever possible rather than exposing shrimp, snails, corals, and other invertebrates.
Can I combine Fix Zole with other treatments?
Do not combine treatments unless a veterinarian or qualified aquatic professional specifically recommends the combination.
How do I administer metronidazole to pet birds?
Administer metronidazole to non-food pet birds only under avian veterinary direction. The veterinarian must determine the amount, administration method, frequency, and duration.
How soon should I see improvement with Fix Zole?
Some improvement may become visible within three to five days through increased appetite, more normal droppings, and improved activity. Stop and seek professional advice if the animal worsens or no improvement is seen within five days.
Where can I buy metronidazole for fish online?
Fix Zole 250 mg and 500 mg tablets can be ordered through this online store and shipped according to the current United States warehouse processing and shipping policy.
More Fish & Bird Treatments
Fix Mox (Amoxicillin) 250/500 mg
A treatment for fin rot, dropsy, ulcers, and other bacterial infections in ornamental fish. Available in 30-count and 100-count capsules.
Shop Fix Mox →Fix Doxy (Doxycycline) 100 mg
A treatment for columnaris, respiratory infections, and Mycoplasma concerns in ornamental fish and non-food pet birds. Available in 30-count and 60-count tablets.
Shop Fix Doxy →Fix Zithro (Azithromycin) 250 mg
A treatment for fin rot, columnaris, gill disease, and avian respiratory concerns. Available in 12-count and 30-count tablets.
Shop Fix Zithro →Fix Cin (Clindamycin) 150 mg
A treatment for Gram-positive bacterial problems, including skin and soft-tissue concerns, in ornamental fish.
Shop Fix Cin →Fix Sulfa (SMZ/TMP) 960 mg
A treatment used against a range of bacterial problems in ornamental aquarium fish.
Shop Fix Sulfa →Fix Pen (Penicillin) 500 mg
A treatment for Gram-positive bacterial problems in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flex (Cephalexin) 250/500 mg
A treatment for fin rot, ulcers, and bacterial skin problems in ornamental fish and non-food pet birds.
Shop Fix Flex →Fix Flox (Ciprofloxacin) 500 mg
A treatment for Gram-negative bacterial problems including fin rot, ulcers, columnaris, and septicemia.
Shop Fix Flox →Browse All Treatments
Explore our complete Fish & Bird Treatments Collection for more Fix line products and related care.
Explore the Collection →Guides and Treatment Tips
Visit the Fish & Bird Care Blog for practical usage guides, aquarium water-care advice, and treatment tips.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, treatment duration, storage, and warnings are taken from the current product label for this item.
Specification Validation
Key information such as ingredient names, tablet strengths, and bottle counts is cross-checked against available manufacturer specifications.
Consistency Checks
Product pages are reviewed for consistent directions, strengths, storage details, and warnings across all sections.
Updates
Pages are updated when product labels, packaging, tablet strengths, or manufacturer information changes.
See something that does not match the product you received? Please contact us so the page can be reviewed and updated.
Fish Flex Cephalexin 250mg & 500mg | Fish Antibiotic
Regular price $18.95 Save $-18.95Fish Cephalexin Capsules - Fish & Bird Antibacterial Treatment 250 mg / 500 mg
Fish Flex (Fix Flex) is an antibacterial treatment in capsule form for ornamental aquarium fish and non-food pet birds.
Made by Aqua Soma Labs, it supplies cephalexin in 250 mg and 500 mg capsule strengths and is available in bottles containing 30 or 100 capsules with clearly printed expiration dates.
Often called Fish Flex, Fin Flex, or simply fishflex in the aquarium community, this product is an online alternative to discontinued Thomas Labs Fish Flex, Fish Flex Forte, Fish Aid Cephalexin, Aqua Ceph 500 mg, Aqua Flex, and FISHBIOTIC Cephalexin products.
Aquarium keepers may also search for it as fish cephalexin, fish cephalexin 500 mg, or cephalexin for fish.
It is used to help manage common bacterial concerns such as fin and tail rot, skin ulcers, infected wounds and lesions, red patches, pop-eye, and dropsy or pinecone disease in freshwater and saltwater aquariums.
Under veterinary guidance, bird keepers may also use cephalexin as part of a treatment plan for bumblefoot, skin infections, or joint infections in pigeons and other non-food pet birds.
The capsules can be opened so the powder disperses quickly through aquarium water in a separate hospital or quarantine tank.
The availability of two strengths and two bottle sizes gives aquarium and bird keepers flexible options, whether maintaining one hospital tank, several community aquariums, or a veterinarian-directed aviary treatment plan.
Consider treatment when early signs of bacterial stress appear, including ragged fins, red or pale fin edges, open sores, localized swelling, cloudy body patches, pop-eye, or persistent appetite loss.
Fish-Specific Symptoms
- Fin and tail rot with frayed or ragged fins
- Skin ulcers, open sores, and infected wounds
- Red or cloudy patches on the body
- Pop-eye or exophthalmia
- Dropsy or pinecone disease
- Localized swelling
- Appetite loss or listless behavior
Bird-Specific Symptoms Under Veterinary Guidance
- Bumblefoot or swollen foot pads
- Skin irritation, redness, or infection
- Joint infection or swelling
- Ruffled or fluffed feathers
- Reduced activity
- Persistent appetite loss
Addressing possible bacterial problems early, together with suitable water quality, good housing, reduced stress, and advice from an aquatic or avian professional, helps maintain a stable aquarium or aviary.
Fix Flex is formulated, labeled, and sold exclusively as an antibacterial treatment for ornamental aquariums and non-food pet birds.
Order online for same-day dispatch on qualifying orders placed before 1:30 p.m. CT, Monday through Friday. Orders ship from our United States warehouse through USPS or UPS.
Fish Flex vs Fix Flex: What Changed?
If you previously purchased Thomas Labs Fish Flex, Fish Flex Forte, Aqua Ceph, Aqua Flex, or FISHBIOTIC Cephalexin, here is what has changed and what remains the same.
Same Cephalexin
Fix Flex contains cephalexin in the same familiar 250 mg and 500 mg capsule strengths associated with older Fish Flex and Aqua Ceph products.
New Manufacturer
Fix Flex is made in the United States by Aqua Soma Labs, replacing the discontinued Thomas Labs line.
Same Capsule Form
The capsules can be opened so the powder can be mixed into aquarium water or administered to birds exactly as directed by an avian veterinarian.
Two Strengths and Two Bottle Sizes
Choose 250 mg or 500 mg capsules in 30-count or 100-count bottles according to the aquarium volume and treatment plan.
Benefits of Fix Flex for Fish & Birds
Bacterial Support for Fish and Birds
Fix Flex provides cephalexin for ornamental aquarium fish and non-food pet birds and may help manage fin and tail rot, skin ulcers, infected wounds, red patches, and other bacterial concerns when used as directed.
Made in the United States
Fix Flex is manufactured in the United States by Aqua Soma Labs, with clear strength labeling and expiration information on each bottle.
Two Strengths to Match Your Tank
Choose 250 mg capsules for smaller treatment systems or 500 mg capsules for larger water volumes while following the product label.
Consistent Capsules
Each capsule provides a consistent amount of cephalexin, making aquarium-volume calculations easier across quarantine tanks and larger treatment systems.
Easy to Prepare
Capsules can be opened and the powder mixed with aquarium water, helping distribute the treatment evenly while limiting unnecessary handling of stressed fish.
Freshwater, Saltwater & Aviary Setups
Fix Flex may be used in properly prepared freshwater or marine hospital tanks and in veterinarian-directed treatment plans for pigeons and other ornamental birds.
Good for Hospital Tanks and Quarantine
A separate treatment system protects the main aquarium's biological filtration and reduces unnecessary exposure of healthy tank mates and sensitive invertebrates.
Usage Guidelines & Instructions
Set Up a Separate Treatment Area
Move affected fish to a dedicated hospital or quarantine tank before treatment.
Where practical, birds receiving veterinarian-directed treatment should be separated into an appropriate treatment enclosure.
Separation helps protect healthy animals and allows more accurate treatment and observation.
Choose the Right Strength
Fix Flex is available in 250 mg and 500 mg capsule strengths.
Select the strength that matches the treatment-tank water volume or the instructions provided by a qualified professional.
Do not increase the amount, shorten the interval, or extend treatment beyond the label directions.
Directions for Fish Aquariums
Add one dissolved 250 mg dose per 10 gallons or approximately 38 litres of treatment water.
Open the capsule, stir the powder into a clean cup of aquarium water, and distribute the prepared solution evenly throughout the hospital tank.
Repeat every 24 hours for 5 to 10 days, performing a partial water change between treatments.
Discontinue treatment and consult an aquatic veterinarian if no improvement is seen within five days.
Use in Pet Birds Under Veterinary Guidance
Only administer cephalexin to pigeons and other non-food pet birds under the direction of an avian veterinarian.
The veterinarian should determine the correct amount according to the bird's species, weight, condition, frequency, and treatment duration.
Capsule contents may be mixed with soft food or drinking water only as specifically instructed.
Maintain Water Quality & Complete Treatment
Perform partial water changes when needed between treatments to keep ammonia and nitrite low.
Maintain stable temperature and strong aeration throughout the treatment period.
Complete the full label-directed treatment unless a veterinarian advises otherwise.
Seek professional guidance if symptoms become worse or fail to improve.
Fix Flex Amounts by Aquarium Size
| Tank volume | Cephalexin per use | 250 mg capsules | 500 mg capsules |
|---|---|---|---|
| 10 gallons (38 L) | 250 mg | 1 capsule | Use the 250 mg strength |
| 20 gallons (76 L) | 500 mg | 2 capsules | 1 capsule |
| 30 gallons (114 L) | 750 mg | 3 capsules | 1 capsule plus one 250 mg capsule |
| 40 gallons (151 L) | 1,000 mg | 4 capsules | 2 capsules |
| 55 gallons (208 L) | Approximately 1,375 mg | 5 to 6 capsules | Approximately 3 capsules |
What to Expect During Treatment
Days 1 to 2
Fish may hide, eat less, or produce slightly cloudy treatment water. Maintain strong aeration and continue monitoring water quality.
Days 3 to 5
Look for sores and red patches that stop spreading, returning appetite, improved activity, and steadier breathing.
Days 5 to 10
Complete the recommended treatment even when improvement appears. After treatment, perform a partial water change and restore activated carbon.
What You Need for Treatment
Prepare the following supplies before the first treatment:
- A separate hospital or quarantine tank
- A suitable aquarium heater
- An air stone or established sponge filter
- An ammonia and nitrite test kit
- A suitable water conditioner or dechlorinator
- A small net for gentle fish transfer
- A clean cup for mixing each treatment
Pro Tip: Quarantine affected fish and birds away from healthy companions whenever practical. A dedicated treatment setup with stable temperature, strong aeration, and no substrate makes observation and water changes easier.
How Fix Flex Works
Fix Flex supplies cephalexin as the active ingredient at a strength of 250 mg or 500 mg per capsule.
Cephalexin works against a range of susceptible Gram-positive bacteria and some Gram-negative species that may affect the skin, fins, wounds, and soft tissues of ornamental fish and non-food pet birds.
In practical terms, it helps slow or stop the growth of susceptible bacteria so the animal has a better opportunity to recover when the underlying condition is bacterial.
Each hard capsule contains cephalexin powder together with standard inactive ingredients that support capsule stability and help the contents disperse when mixed into aquarium water.
Administration to birds should follow the exact method and amount provided by an avian veterinarian.
Safety and Tank Notes
When used as directed, Fix Flex generally causes no problems in ornamental aquarium fish and non-food pet birds.
Incorrect amounts, unnecessarily prolonged use, or repeated antibacterial treatment may increase the risk of unwanted reactions and bacterial resistance.
Fish
Cephalexin treatment may cause temporary hiding, mild treatment-water cloudiness, reduced activity, or appetite loss.
If severe distress appears, including rapid gill movement, surface gasping, loss of balance, or remaining on the bottom, stop treatment, improve aeration, perform an appropriate water change, and seek aquatic veterinary advice.
Birds
Possible reactions may include reduced appetite, loose or changed droppings, and lethargy, particularly when the amount is too high or the bird is sensitive.
If a bird becomes fluffed up, inactive, has difficulty breathing, or stops eating, discontinue treatment and contact an avian veterinarian.
Invertebrates
Do not use Fix Flex in display aquariums containing shrimp, snails, corals, or other sensitive invertebrates whenever a separate hospital tank is available.
Strong antibacterial treatment may harm sensitive species or disrupt the aquarium ecosystem.
Safe Use in Your System
Remove activated carbon and switch off UV sterilization during treatment.
Monitor ammonia, nitrite, temperature, and oxygen levels closely.
Do not combine Fix Flex with other treatments unless specifically advised by a qualified veterinarian.
Important Safety Warning
Fix Flex is intended for ornamental aquarium fish and non-food pet birds only. It is not intended for animals raised for food.
Store the capsules in their original container in a cool, dry location protected from direct sunlight, excessive heat, and moisture.
Keep the container tightly closed and out of reach of children and animals.
Always follow the current product-label directions.
Shipping & Returns
Shipping Policy
Orders ship from our United States warehouse within one business day through USPS or UPS.
Same-day dispatch may be available for qualifying orders placed before 1:30 p.m. CT, Monday through Friday.
Shipping prices and estimated delivery times are calculated at checkout.
Review Shipping Policy →Refund Policy
If there is an issue with your order, eligible products may be returned or exchanged within 30 days according to the current store guidelines.
Review the complete refund policy before returning any product.
Review Refund Policy →Frequently Asked Questions
What is Fix Flex used for in fish and birds?
Fix Flex contains cephalexin and is used for certain bacterial concerns affecting ornamental aquarium fish, including fin and tail rot, skin ulcers, infected wounds, red patches, pop-eye, and soft-tissue infections.
In non-food pet birds, use should occur only under avian veterinary guidance.
What is the difference between Fish Flex and Fix Flex?
Fix Flex is the current Aqua Soma Labs replacement for discontinued Fish Flex products. It provides cephalexin in familiar 250 mg and 500 mg capsule strengths with updated packaging.
Is Fix Flex a replacement for Fish Flex Forte?
Yes. The 500 mg Fix Flex strength is presented as the replacement for older Fish Flex Forte 500 mg products.
Is Fix Flex the same as Aqua Ceph or Aqua Flex?
Fix Flex is the updated Aqua Soma Labs cephalexin product replacing older Aqua Ceph and Aqua Flex names in familiar 250 mg and 500 mg strengths.
Is Fish Flex the same as fish cephalexin 500 mg?
The Fix Flex 500 mg option contains 500 mg of cephalexin per capsule. A separate 250 mg strength is also available.
Where can I buy cephalexin for fish online?
Fix Flex 250 mg and 500 mg capsules can be ordered through this online store in 30-count or 100-count bottles and shipped according to the current store shipping policy.
How do I know if my fish might need cephalexin?
Possible bacterial signs include frayed fins, ulcers, infected wounds, red or cloudy body areas, swelling, pop-eye, dropsy, appetite loss, and listless behavior.
Similar signs may also result from poor water quality, parasites, fungal conditions, injury, or other causes, so professional assessment is recommended when the diagnosis is uncertain.
How do I choose between 250 mg and 500 mg capsules?
Select the strength according to the actual water volume of the treatment tank. The supplied guideline uses 250 mg per 10 gallons, meaning one 500 mg capsule corresponds to approximately 20 gallons.
Can I use Fix Flex in my main community or reef tank?
A separate hospital tank is preferred. This reduces exposure of healthy fish and sensitive invertebrates and helps protect the display aquarium's biological filtration.
Does Fix Flex work in saltwater aquariums?
Fix Flex is presented for use in properly prepared freshwater and saltwater treatment systems. A separate hospital tank is especially important for marine systems containing corals or invertebrates.
How long should I treat with Fix Flex?
The supplied instructions describe treatment every 24 hours for 5 to 10 days, with partial water changes between treatments.
Discontinue treatment and seek professional advice if no improvement is seen within five days.
Can Fix Flex be used for pet birds?
Fix Flex may be considered for non-food pet birds only under avian veterinary guidance. The veterinarian must determine the amount, administration method, frequency, and duration.
Can I use Fix Flex for my dog or cat?
No. This product is labeled for ornamental aquarium fish and non-food pet birds. It is not intended for dogs, cats, humans, or food-producing animals.
Will Fix Flex harm beneficial aquarium bacteria?
Antibacterial treatments may disrupt beneficial biological filtration. Use a separate treatment tank whenever possible and monitor ammonia and nitrite closely.
Can I combine Fix Flex with other fish treatments?
Do not combine Fix Flex with other antibacterial or aquarium treatments unless a qualified veterinarian specifically recommends the combination.
How quickly should I see improvement?
Improvement may appear within three to five days through sores that stop spreading, improved appetite, steadier breathing, and increased activity.
Stop and seek professional guidance if the animal worsens or no improvement appears by day five.
Can Fix Flex treat fungal, viral, or parasitic infections?
Fix Flex is an antibacterial product. It should not be expected to treat fungal, viral, or parasitic conditions unless a professional has identified a separate appropriate reason for its use.
How should I store and dispose of Fix Flex capsules?
Store capsules tightly closed in their original container in a cool, dry place protected from sunlight and moisture.
Follow the current label and applicable local requirements when disposing of unused capsules, treatment water, or filter media. Avoid releasing concentrated treatment into natural waterways.
What is fish cephalexin?
Fish cephalexin is a commonly used search term for cephalexin capsules labeled for ornamental aquarium fish. Fix Flex is offered in 250 mg and 500 mg capsule strengths.
How much Fix Flex should I use per gallon?
The supplied label reference is 250 mg per 10 gallons, approximately 25 mg per gallon. Always follow the current bottle label and dose according to the actual treatment-tank water volume.
More Fish & Bird Treatments
Fix Mox (Amoxicillin) 250/500 mg
A treatment for fin rot, dropsy, ulcers, and other bacterial concerns in ornamental fish. Available in 30-count and 100-count capsules.
Shop Fix Mox →Fix Zole (Metronidazole) 250/500 mg
Targets certain anaerobic organisms and protozoa associated with Hexamita and hole-in-the-head concerns. Available in 60-count bottles.
Shop Fix Zole →Fix Doxy (Doxycycline) 100 mg
A treatment for columnaris, respiratory concerns, and Mycoplasma-related problems in ornamental fish and non-food pet birds.
Shop Fix Doxy →Fix Zithro (Azithromycin) 250 mg
A treatment for fin rot, columnaris, gill disease, and veterinarian-directed avian respiratory concerns.
Shop Fix Zithro →Fix Cin (Clindamycin) 150 mg
A treatment for certain Gram-positive bacterial concerns, including skin and soft-tissue problems in ornamental fish.
Shop Fix Cin →Fix Sulfa (SMZ/TMP) 960 mg
A treatment used for a range of bacterial concerns affecting ornamental aquarium fish.
Shop Fix Sulfa →Fix Pen (Penicillin) 500 mg
A treatment for certain Gram-positive bacterial concerns in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flox (Ciprofloxacin) 500 mg
A treatment for certain Gram-negative bacterial concerns including fin rot, ulcers, columnaris, and septicemia.
Shop Fix Flox →Browse All Treatments
Explore our complete Fish & Bird Treatments Collection for additional Fix line products and related care options.
Explore the Collection →Guides and Care Tips
Visit the Fish & Bird Care Blog for practical guides, aquarium water-care information, and treatment tips.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, treatment duration, storage information, and warnings are taken from the current product label.
Specification Validation
Key details such as the active ingredient, capsule strengths, bottle counts, and manufacturer information are cross-checked against available product specifications.
Consistency Checks
Product content is reviewed for consistent strengths, directions, safety language, and storage details throughout the page.
Updates
Pages are updated when product labels, packaging, capsule counts, manufacturer details, or directions change.
See something that does not match the product you received? Please contact us so the information can be reviewed and updated.
Fish Sulfa Forte | Sulfa Antibiotic for Aquarium Fish
Regular price $39.99 Save $-39.99Fish Sulfa Forte (Fix Sulfa) Tablets, 960 mg
Fish Sulfa (Fix Sulfa) SMZ/TMP 960 mg is an antibacterial treatment for ornamental aquarium fish.
Each scored tablet combines sulfamethoxazole 800 mg with trimethoprim 160 mg. Aquarium keepers use this dual-ingredient combination to help manage suspected bacterial problems in freshwater and saltwater treatment systems.
In older aquarium listings and hobby forums, this SMZ/TMP product may also be called Fish Sulfa, Fish Sulfa Forte, FISHBIOTIC SMZ/TMP, Aqua Sulfa, or Aqua-SMZ/TMP.
Fix Sulfa is the current-production Aqua Soma Labs replacement for the discontinued Thomas Labs Fish Sulfa Forte.
Aquarium keepers commonly use this combination when fish show symptoms associated with fin and tail rot, columnaris or cotton-wool-type patches, skin sores, ulcer-like lesions, bacterial hemorrhagic septicemia, pop-eye, cloudy eyes, and body-slime concerns.
These signs may involve susceptible bacteria such as Aeromonas, Vibrio, or Streptococcus.
SMZ/TMP combines two active ingredients that work together to help slow the growth of certain bacteria.
Used as directed, sulfamethoxazole and trimethoprim work best alongside stable water parameters, strong aeration, clean treatment water, reduced stress, and appropriate aquarium husbandry.
Fix Sulfa comes as a consistent 960 mg scored tablet that can be divided, crushed, and dissolved.
It is available in bottles containing 30 or 60 tablets with clearly printed expiration dates, allowing aquarium keepers to choose a suitable quantity for one quarantine tank or a multi-tank fish room.
Begin treatment at the first signs of bacterial stress and use a hospital or quarantine tank whenever practical.
Fish Symptoms Aquarists Treat With Fix Sulfa
- Fin and tail rot with frayed or deteriorating fins
- Skin sores, ulcer-like lesions, and red streaks
- Pop-eye or bulging eyes
- Cloudy eyes
- Columnaris with a cotton-wool-type appearance
- Bacterial hemorrhagic septicemia
- Body-slime concerns associated with susceptible bacteria
- Lethargy, rapid breathing, or appetite loss that does not resolve after water-quality correction
Same-day dispatch: Qualifying orders placed before 1:30 p.m. CT, Monday through Friday, ship from our United States warehouse through USPS or UPS.
Fish Sulfa Forte vs Fix Sulfa: What Changed?
If you previously purchased Thomas Labs Fish Sulfa Forte, FISHBIOTIC SMZ/TMP, Aqua Sulfa, or Aqua-SMZ/TMP, here is what has changed and what remains the same.
Same SMZ/TMP Combination
Fix Sulfa contains sulfamethoxazole 800 mg and trimethoprim 160 mg per tablet, providing a combined strength of 960 mg.
Updated Fix Branding
Aqua Soma Labs produces Fix Sulfa as the current replacement for discontinued Fish Sulfa Forte and other older aquarium SMZ/TMP products.
Same Scored Tablet Form
Each tablet provides a consistent 960 mg total strength and can be divided, crushed, and dissolved according to the aquarium-water volume.
Flexible Bottle Sizes
Choose between 30-count and 60-count bottles for short treatment plans, quarantine systems, or larger multi-tank setups.
Benefits of Fix Sulfa for Fish
Dual-Action SMZ/TMP Combination
Fix Sulfa pairs sulfamethoxazole and trimethoprim, a combination aquarium keepers use to help manage certain bacterial concerns in ornamental fish.
Made in the United States
Fix Sulfa is manufactured in the United States by Aqua Soma Labs as the current-production replacement for discontinued Fish Sulfa Forte products.
Support for Common Aquarium Problems
Aquarium keepers may choose Fish Sulfa tablets for fin and tail rot, columnaris-type patches, cotton-wool-type signs, ulcers, pop-eye, cloudy eyes, and persistent bacterial symptoms.
External and Internal Bacterial Signs
SMZ/TMP may be used in a hospital tank for visible sores and fin damage or when lethargy and appetite loss occur together with suspected bacterial stress.
Consistent 960 mg Tablet Strength
Each scored tablet provides a predictable amount of sulfamethoxazole and trimethoprim, helping aquarium keepers plan repeatable amounts for different water volumes.
Intended for Ornamental Fish
Fix Sulfa is formulated and labeled for ornamental aquarium fish and provides a countable tablet format for treatment-tank use.
Helpful for Hospital Tanks
A separate hospital or quarantine tank allows closer observation, more accurate treatment, and reduced exposure of healthy tank mates.
Usage Guidelines & Instructions
These steps follow the supplied Fix Sulfa 960 bottle-label directions for SMZ/TMP use in ornamental aquarium fish.
Quick Usage Summary
Dissolve one tablet and add it for every 40 gallons or approximately 151 litres of treatment water.
Repeat every 24 hours with a partial water change between treatments for 5 to 10 days.
Discontinue use if no improvement is noted after five days.
Before You Dose
Measure the Actual Water Volume
Calculate the real volume of water being treated rather than relying only on the aquarium's advertised capacity.
Account for substrate, rocks, decorations, equipment, and the actual fill level.
Use a Hospital or Quarantine Tank
Treat affected fish in a separate system whenever practical for better control and closer observation.
Remove Carbon and Turn Off UV
Remove activated carbon and other chemical filtration media before treatment.
Switch off ultraviolet sterilization because these systems may reduce treatment availability in the water.
Increase Aeration
Increase surface agitation and aeration while keeping the treatment-tank temperature stable.
Directions for Use
Dissolve and Add the Treatment
Fully dissolve one tablet in a small cup of aquarium water.
Add the dissolved mixture evenly throughout the treatment tank at a rate of one tablet per 40 gallons or approximately 151 litres.
Repeat Every 24 Hours
Repeat treatment once every 24 hours.
Perform a partial water change between treatments to maintain suitable water quality.
Complete Treatment and Monitor Progress
Continue treatment for 5 to 10 days according to the current bottle label.
Monitor appetite, swimming behavior, breathing, fin condition, sores, and signs of stress.
Discontinue use if no improvement is noted after five days.
If fish appear worse or develop severe stress, stop treatment and seek aquatic veterinary advice.
Post-Treatment Cleanup
After treatment is complete, perform a partial water change and resume normal filtration.
Replace activated carbon or other chemical media if they were removed.
Continue monitoring ammonia, nitrite, temperature, and fish behavior for several days.
Fix Sulfa Amounts by Aquarium Size
| Tank volume | Fix Sulfa 960 amount | How to measure |
|---|---|---|
| 10 gallons (38 L) | ¼ tablet | Divide the scored tablet or add one-quarter of a fully dissolved tablet |
| 20 gallons (76 L) | ½ tablet | Divide the scored tablet or add one-half of a fully dissolved tablet |
| 40 gallons (151 L) | 1 tablet | Dissolve one complete tablet according to the label standard |
| 80 gallons (303 L) | 2 tablets | Dissolve two complete tablets |
| 120 gallons (454 L) | 3 tablets | Dissolve three complete tablets |
What to Expect During Treatment
Days 1 to 2
Fish may hide, eat less, or produce slightly cloudy treatment water. Maintain the treatment schedule and keep aeration strong.
Days 3 to 5
Look for sores and red patches that stop spreading, returning appetite, improved activity, and steadier breathing.
Days 5 to 10
Complete the recommended treatment period. After treatment, perform a partial water change and restore activated carbon if normally used.
What You Need for Treatment
- A separate hospital or quarantine tank
- A suitable aquarium heater
- An air stone or established sponge filter
- An ammonia and nitrite test kit
- A suitable water conditioner or dechlorinator
- A small net for gentle transfer
- A clean cup for dissolving and measuring the treatment
Pro Tip: Hospital-tank treatment helps protect the display aquarium, keeps the amount consistent, and makes it easier to maintain ammonia and nitrite at safe levels during recovery.
How Fix Sulfa Works
Each Fix Sulfa tablet combines sulfamethoxazole 800 mg with trimethoprim 160 mg, providing a total SMZ/TMP strength of 960 mg.
When dissolved and added to aquarium water according to the label, the two active ingredients work together to help slow the growth of certain susceptible bacteria.
This combination is commonly used by aquarium keepers for suspected bacterial concerns involving fins, skin, sores, ulcers, eyes, and systemic signs in ornamental freshwater and saltwater fish.
Each tablet also contains standard inactive ingredients that help hold the tablet together, support storage stability, and allow the contents to disperse when dissolved in water.
Safety and Tank Notes
Individual fish may respond differently to treatment. Follow the current label and monitor fish and water quality closely throughout the treatment period.
Possible Side Effects in Fish
Possible temporary reactions include reduced appetite, mild lethargy, hiding behavior, and occasional water cloudiness.
If fish develop rapid gill movement, surface gasping, loss of balance, or remain on the bottom, stop treatment, increase aeration, and seek aquatic veterinary advice.
Stop Treatment If
Stop treatment when fish show severe stress, worsening symptoms, rapid gill movement, surface gasping, loss of balance, or a serious decline in activity.
Increase aeration immediately and consult an aquatic veterinarian if the signs do not stabilize.
Water Quality and Biofilter Awareness
Keep aeration strong and monitor ammonia and nitrite closely.
Perform partial water changes when necessary to keep the treatment system stable.
Filtration During Treatment
Remove activated carbon and other chemical filtration media before treatment.
Switch off ultraviolet sterilization and resume normal filtration only after treatment is complete.
Invertebrates and Display Tanks
If the aquarium contains shrimp, snails, corals, or other sensitive invertebrates, treat affected fish in a separate hospital tank whenever practical.
Do Not Mix Treatments
Avoid combining Fix Sulfa with other aquarium treatments unless the product label explicitly allows it or an aquatic veterinarian recommends it.
Important Warnings & Precautions
Aquarium use only: Fix Sulfa is intended for ornamental aquarium fish only.
Not for food fish: Do not use this product on fish raised for human consumption.
Handling: Avoid contact with the dissolved treatment. Wash your hands after handling and use suitable gloves when needed. Keep the tablet contents and dissolved product away from the skin and eyes.
Storage: Keep the container tightly closed in a cool, dry location protected from direct sunlight and moisture.
Keep out of reach of children and animals. Check the expiration date and do not use expired tablets.
Discontinue if no improvement: If no improvement is noted after five days, stop treatment and re-evaluate the diagnosis or seek aquatic veterinary advice.
Shipping & Returns
Shipping Policy
Orders ship from our United States warehouse within one business day through USPS or UPS.
Qualifying orders placed before 1:30 p.m. CT, Monday through Friday, may ship the same business day.
Shipping rates and estimated delivery times are calculated at checkout.
Review Shipping Policy →Refund Policy
If there is an issue with your order, eligible products may be returned or exchanged within 30 days according to the current store guidelines.
Review the complete refund policy before returning any product.
Review Refund Policy →Frequently Asked Questions
What is Fix Sulfa used for?
Fix Sulfa is an SMZ/TMP antibacterial treatment for certain suspected bacterial problems in ornamental aquarium fish, including fin and tail rot, ulcers, columnaris-type signs, pop-eye, cloudy eyes, red streaking, and systemic bacterial stress.
What is Fish Sulfa Forte?
Fish Sulfa Forte was an aquarium SMZ/TMP product containing sulfamethoxazole and trimethoprim. Fix Sulfa is the current Aqua Soma Labs replacement in the same combined 960 mg strength.
What is the difference between Fish Sulfa Forte and Fix Sulfa?
Fix Sulfa uses the same combination of sulfamethoxazole 800 mg and trimethoprim 160 mg associated with older Fish Sulfa Forte products. The main changes are the manufacturer, branding, packaging, and current production.
Is Fix Sulfa a replacement for Aqua-SMZ/TMP?
Fix Sulfa is presented as the current Aqua Soma Labs replacement for older Aqua Sulfa and Aqua-SMZ/TMP aquarium products.
Where can I buy SMZ/TMP fish tablets online?
Fix Sulfa 960 mg tablets can be ordered through this online store in 30-count or 60-count bottles and shipped according to the current store shipping policy.
What are the active ingredients in each tablet?
Each scored tablet contains sulfamethoxazole 800 mg and trimethoprim 160 mg, providing a combined strength of 960 mg.
What is the Fix Sulfa amount for fish?
The supplied label direction is one 960 mg tablet per 40 gallons or approximately 151 litres of treatment water.
How much Fix Sulfa should I use per gallon?
One tablet per 40 gallons equals approximately 24 mg of combined sulfamethoxazole and trimethoprim per gallon. Follow the current bottle label rather than relying only on a calculated per-gallon amount.
How long should I treat with Fix Sulfa?
The supplied instructions describe treatment every 24 hours for 5 to 10 days, with a partial water change between treatments.
Discontinue treatment if no improvement is noted after five days.
How soon should I see improvement?
Improvement may appear within three to five days through sores that stop spreading, improved appetite, steadier breathing, and increased activity.
Stop treatment and seek professional guidance if fish worsen or no improvement appears by day five.
Should I treat in the main tank or a hospital tank?
A separate hospital or quarantine tank is preferred. This provides better treatment control, protects healthy tank mates, and reduces disturbance to the display aquarium.
Do I need to remove carbon or turn off UV?
Remove activated carbon and other chemical filtration media and switch off ultraviolet sterilization during treatment because these systems may reduce treatment availability in the water.
Will Fix Sulfa harm beneficial aquarium bacteria?
Antibacterial treatment may disturb biological filtration. Use a separate treatment system when possible and monitor ammonia and nitrite closely.
Can Fix Sulfa treat fungal, viral, or parasitic infections?
Fix Sulfa is an antibacterial treatment. It should not be expected to treat fungal, viral, or parasitic conditions.
Is Fix Sulfa safe for betta fish and small aquariums?
Small treatment tanks require careful measurement. Because each tablet is scored, it may be divided, or a complete tablet may be dissolved in a measured amount of water and the correct fraction added. Always follow the current bottle label.
Does Fix Sulfa work in saltwater aquariums?
Fix Sulfa is presented for ornamental fish in freshwater and saltwater treatment systems. Use a separate hospital tank when the display aquarium contains corals or sensitive invertebrates.
Can I combine Fix Sulfa with other fish treatments?
Do not combine Fix Sulfa with other treatments unless the label specifically permits the combination or an aquatic veterinarian recommends it.
What if my fish are not improving?
Discontinue treatment if no improvement is noted after five days. Re-evaluate the water quality and diagnosis and seek aquatic veterinary advice.
What should I do after finishing treatment?
Perform a partial water change, resume normal filtration, restore activated carbon or chemical media, and continue monitoring ammonia, nitrite, and fish behavior for several days.
How should I store and dispose of Fix Sulfa tablets?
Store tablets tightly closed in the original container in a cool, dry location protected from sunlight and moisture.
Follow the product label and applicable local requirements when disposing of unused tablets, treatment water, or filter media. Avoid releasing concentrated treatment into natural waterways.
Bottom Line
Fix Sulfa is an SMZ/TMP 960 mg antibacterial treatment containing sulfamethoxazole 800 mg and trimethoprim 160 mg for bacterial concerns in ornamental aquarium fish.
It is the current-production replacement for discontinued Thomas Labs Fish Sulfa Forte.
Dose according to water volume at one tablet per 40 gallons or approximately 151 litres, repeat every 24 hours with a partial water change between treatments, and continue for 5 to 10 days according to the current bottle label.
Reassess treatment at day five and discontinue use if no improvement is noted.
Fix Sulfa does not treat fungal, viral, or parasitic conditions and is intended only for ornamental aquarium fish, not animals raised for food.
Choose the bottle size that fits your aquarium setup, or compare the additional Fix line products below.
More Fish & Bird Treatments
Fix Mox (Amoxicillin) 250/500 mg
A treatment for fin rot, dropsy, ulcers, and other bacterial concerns in ornamental fish. Available in 30-count and 100-count capsules.
Shop Fix Mox →Fix Zole (Metronidazole) 250/500 mg
Targets certain anaerobic organisms and protozoa associated with Hexamita and hole-in-the-head concerns. Available in 60-count bottles.
Shop Fix Zole →Fix Doxy (Doxycycline) 100 mg
A treatment for columnaris, respiratory concerns, and Mycoplasma-related problems in ornamental fish and non-food pet birds.
Shop Fix Doxy →Fix Zithro (Azithromycin) 250 mg
A treatment for fin rot, columnaris, gill disease, and veterinarian-directed avian respiratory concerns.
Shop Fix Zithro →Fix Cin (Clindamycin) 150 mg
A treatment for bacterial skin and soft-tissue concerns in ornamental fish.
Shop Fix Cin →Fix Pen (Penicillin) 500 mg
A penicillin treatment for bacterial concerns in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flex (Cephalexin) 250/500 mg
A treatment for fin rot, ulcers, infected wounds, and bacterial skin concerns in ornamental fish and non-food pet birds.
Shop Fix Flex →Fix Flox (Ciprofloxacin) 500 mg
A treatment for bacterial concerns including fin rot, ulcers, columnaris-type patches, and septicemia in ornamental fish.
Shop Fix Flox →Browse All Treatments
Explore the complete Fish & Bird Treatments Collection for additional Fix line products and related treatment options.
Explore the Collection →Guides and Care Tips
Visit the Fish & Bird Care Blog for practical aquarium guides, water-care information, and treatment tips.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, treatment duration, storage information, and warnings are taken from the current product label.
Specification Validation
Active ingredients, tablet strengths, bottle counts, and manufacturer details are cross-checked against available product specifications.
Consistency Checks
Product content is reviewed for consistent directions, strengths, storage information, and safety language throughout the page.
Updates
Pages are updated when product labels, packaging, bottle counts, manufacturer details, or directions change.
See something that does not match the product you received? Please contact us so the information can be reviewed and updated.
Fish Doxy 100mg (Doxycycline) | Fish Antibiotic
Regular price $43.99 Save $-43.99Fix Doxy (Fish Doxy) Doxycycline Tablets - 100 mg
Fix Doxy delivers doxycycline hyclate 100 mg per tablet for ornamental aquarium fish and non-food pet birds, made by Aqua Soma Labs. It is used when bacterial problems appear, such as fin and tail rot, columnaris (often seen as cotton wool disease), bacterial hemorrhagic septicemia, and other internal bacterial infections in freshwater and saltwater aquariums.
It is also chosen for racing pigeons and other pet birds during respiratory infections, mycoplasmosis (mycoplasma), or suspected chlamydiosis, also known as parrot fever, psittacosis, or ornithosis.
If you used to buy the discontinued Thomas Labs Fish Doxy, Aqua Doxy, or older Bird Biotic, Fix Doxy is the online replacement. It supplies the same doxycycline strength in bottles of 30 or 60 tablets with fresh expiration dates, and it is a straightforward option when you need doxycycline for birds or a fish doxycycline product to buy online.
Use Fix Doxy when you notice early signs of bacterial stress in your fish or pet birds. Common symptoms differ between species, so check the lists below to identify what to watch for.
Fish-Specific Symptoms
- Clamped or frayed fins (fin and tail rot)
- Slime disease, mouth fungus, or mouth rot
- Columnaris (cotton wool disease)
- Red or cloudy patches on the body
- Bacterial hemorrhagic septicemia
- Gill disease or labored gill movement
- Loss of appetite or hiding behavior
Bird-Specific Symptoms
- Respiratory infections: sneezing, wheezing, or nasal discharge
- Mycoplasmosis (mycoplasma)
- Chlamydiosis, ornithosis, psittacosis, or parrot fever
- Pasteurellosis, commonly seen in pigeons
- Fluffed-up feathers, lethargy, or inactivity
- Eye infections or persistent loss of appetite
- Changes in droppings or vocalization
Addressing potential bacterial issues early with doxycycline, together with good water quality and advice from an aquatic or avian professional when available, helps your fish and birds maintain a stable, healthy aquarium or aviary.
Order online and ship directly from our U.S. warehouse. Fix Doxy doxycycline 100 mg tablets are available to buy online with same-day dispatch on orders placed before 1:30 p.m. CT, Monday through Friday.
Fish Doxy vs Fix Doxy: What Changed?
If you used to buy Fish Doxy, Aqua Doxy, or Bird Biotic from Thomas Labs, here is what stayed the same and what is different with Fix Doxy from Aqua Soma Labs.
Same Doxycycline
Fix Doxy delivers the same doxycycline hyclate 100 mg per tablet that was used in the original Fish Doxy and Bird Biotic products.
New Manufacturer
Fix Doxy is made by Aqua Soma Labs, replacing Thomas Labs, which discontinued its Fish Doxy and Bird Biotic lines.
Same Tablet Form
100 mg tablets with the same dosing style of one tablet per 15 gallons, so switching from Fish Doxy to Fix Doxy requires no changes to your routine.
Updated Packaging & Labeling
New bottle design and labeling under the Fix brand, with the same doxycycline formula and fresh expiration dates.
Benefits of Fix Doxy for Fish & Birds
Targets Common Bacterial Problems
Helps manage common bacterial problems such as fin and tail rot, columnaris, gill disease, septicemia, internal bacterial infections, and avian respiratory infections caused by certain Gram-positive and Gram-negative bacteria in both freshwater and saltwater aquariums.
Made in the United States
Fix Doxy is manufactured by Aqua Soma Labs and ships from a U.S. warehouse with fresh expiration dates, so you receive a recently made product ready for your tank or aviary.
One Solution for Fish & Birds
Fix Doxy is formulated for ornamental aquarium fish and non-food pet birds, so one doxycycline product covers tanks and aviaries. Use it for individual treatment or a whole flock as appropriate.
Fixed 100 mg Tablets
Each tablet delivers a fixed 100 mg doxycycline amount. These fish doxycycline tablets make it easier to follow the charts and repeat treatments accurately across different tank volumes or bird sizes.
Flexible Use in Tanks & Feed
Tablets are water-soluble and easy to crush, so you can dissolve them in a hospital or quarantine tank, or mix them with food or drinking water as directed. This helps when you need to treat sensitive fish or birds.
Available in 30-Count and 60-Count Bottles
Choose a 30-count bottle for a single treatment or a 60-count bottle for larger tanks, multiple birds, or repeat treatments, so you always have doxycycline on hand when needed.
Direct Fish Doxy & Bird Biotic Replacement
Fix Doxy replaces the discontinued Fish Doxy from Thomas Labs, Aqua Doxy, and Bird Biotic products. It delivers the same doxycycline hyclate 100 mg per tablet that hobbyists and breeders used before those lines were discontinued.
Usage Guidelines & Instructions
Prepare a Separate Treatment Area
For fish, set up a hospital or quarantine tank with clean, dechlorinated water so you can treat without disturbing the main display tank or its biofilter.
Any aquarium doxycycline treatment works best in a separate tank, so remove activated carbon, resins, and UV sterilizers during dosing, as they can strip doxycycline from the water.
Calculate and Give the Dose
Fish: Check the dosing instructions on your Fix Doxy bottle. Label directions for 100 mg tablets typically call for one tablet, or 100 mg, per 15 gallons or 57 litres of water, repeated every 24 hours for several days.
Pre-dissolve the tablet in a small cup of tank water, then add it evenly around the treatment tank.
Birds: For companion birds, the amount is based on the bird's weight or the volume of treated drinking water. Crush the tablet and mix with soft food or a measured amount of drinking water only as directed on the packaging or by an avian veterinarian, making sure the bird receives the full intended amount.
Monitor Progress and Water Quality
Watch appetite, breathing, activity level, and fin or feather condition every day. If symptoms worsen or no improvement is seen after several days, contact a veterinarian.
For fish, perform partial water changes between doses if water quality declines, then re-dose for the new water volume.
Continue treatment for the full number of days recommended on the label, usually around 5 to 10 days, unless your veterinarian advises otherwise, and never exceed label directions.
Fix Doxy Amounts by Aquarium Size
| Tank volume | 100 mg tablets per use |
|---|---|
| 15 gallons (57 L) | 1 tablet |
| 30 gallons (114 L) | 2 tablets |
| 45 gallons (170 L) | 3 tablets |
| 60 gallons (227 L) | 4 tablets |
| 75 gallons (284 L) | 5 tablets |
What to Expect During Treatment
Days 1 to 2
Fish may hide or eat less, and the water can look slightly discolored. This is normal early on. Keep dosing on schedule and keep aeration strong.
Days 3 to 5
Look for signs it is working: sores and red patches stop spreading, appetite starts to return, and breathing steadies.
Days 5 to 10
Even if the fish are improving, finish the full number of days so the infection does not return. Afterward, run a partial water change and put activated carbon back in to clear leftover doxycycline.
What You Need for Treatment
A little setup before the first dose saves trouble later.
- A separate hospital or quarantine tank, so you are not treating the whole display
- A heater and an air stone or sponge filter for steady temperature and strong aeration
- An ammonia and nitrite test kit to keep tabs on water quality
- A dechlorinator for water changes between doses
- A small net and a clean cup for gentle transfer and for dissolving each tablet
Pro Tip: Keep a few extra Fix Doxy tablets on hand so you always have them ready at the first sign of bacterial stress. A quarantine tank with a heater and sponge filter makes treatment faster and protects your main system.
How Fix Doxy Works
Fix Doxy uses doxycycline hyclate 100 mg per tablet to help control certain Gram-positive and Gram-negative bacteria linked with fin and tail rot, mouth rot, columnaris, gill disease, septicemia, and avian respiratory infections.
The tablets dissolve readily in aquarium water, and they can also be crushed and mixed with soft food or drinking water, which spreads the dose evenly through a treatment tank or across a flock.
Safety and Tank Notes
When used as directed, Fix Doxy usually causes no problems in ornamental fish and pet birds. As with any doxycycline product, incorrect amounts or prolonged use can increase the risk of side effects.
Fish
Doxycycline-based fish treatments may cause temporary stress or hiding behavior, mild water discoloration, and reduced appetite during treatment.
If fish show severe distress such as rapid gill movement, loss of balance, or gasping at the surface, stop treatment and seek aquatic veterinary advice.
Birds
When doxycycline is given in food or drinking water, potential reactions can include decreased appetite, lethargy, or changes in droppings if the amount is too high or the bird is sensitive.
If your bird appears fluffed up, inactive, or stops eating, discontinue use and contact an avian veterinarian.
Invertebrates
Do not use Fix Doxy in tanks that contain shrimp, snails, or other invertebrates, as strong treatments may harm them.
Treat fish in a separate hospital tank whenever possible.
Safe Use in Your System
Whenever possible, treat fish in a hospital or quarantine tank, remove activated carbon and UV sterilizers, and follow label directions for dose and duration.
Do not mix Fix Doxy with other treatments unless advised by a veterinarian.
Important Safety Warning
Fix Doxy is intended for ornamental aquarium fish and non-food pet birds only. It is not for animals raised for food.
Store the product in a cool, dry place away from children and pets. Always follow label directions.
Shipping & Returns
Shipping Policy
Orders ship from our U.S. warehouse within one business day via USPS or UPS, with rates and delivery times calculated at checkout.
For full shipping details, please review our shipping policy.
Review Shipping Policy →Refund Policy
If there is an issue with your order, you may be able to return or exchange items within 30 days according to our store guidelines.
Before sending anything back, please review our refund policy carefully.
Review Refund Policy →Frequently Asked Questions
What is Fix Doxy used for?
Fix Doxy is used for certain bacterial problems affecting ornamental aquarium fish and non-food pet birds. These may include fin and tail rot, columnaris, gill disease, bacterial septicemia, internal bacterial infections, and certain avian respiratory infections.
What is in Fix Doxy (Fish Doxy)?
Each Fix Doxy tablet provides doxycycline hyclate at a strength of 100 mg per tablet.
What is the difference between Fish Doxy and Fix Doxy?
Fix Doxy provides the same doxycycline hyclate strength of 100 mg per tablet. The primary differences are the manufacturer, packaging, branding, and labeling. Fix Doxy is made by Aqua Soma Labs, while the former Fish Doxy line was associated with Thomas Labs.
Is Fix Doxy a replacement for Bird Biotic?
Fix Doxy is presented as the online replacement for the discontinued Bird Biotic product. It provides doxycycline hyclate in a 100 mg tablet form for ornamental fish and non-food pet birds.
Is Bird Biotic still available, and is Fix Doxy a true replacement?
The older Thomas Labs Bird Biotic line was discontinued. Fix Doxy is offered as a replacement with the same doxycycline strength in an updated Aqua Soma Labs product.
Is Fix Doxy the same as Aqua Doxy?
Fix Doxy is intended to replace older Aqua Doxy products and provides doxycycline hyclate in the same 100 mg tablet format. Always check the current product label before use.
Can I use Fix Doxy for dogs, cats, or chickens?
No. This product is labeled for ornamental aquarium fish and non-food pet birds. It is not intended for dogs, cats, humans, or animals raised for food.
Where can I buy doxycycline for fish online?
Fix Doxy doxycycline 100 mg tablets can be ordered through this online store and shipped from our U.S. warehouse according to the current shipping policy.
Is Fix Doxy available in 500 mg?
This Fix Doxy product contains 100 mg of doxycycline hyclate per tablet and is offered in 30-count and 60-count bottles.
How do I know if my fish or bird might need a treatment like Fix Doxy?
Possible signs in fish include frayed fins, cloudy or red body patches, sores, abnormal gill movement, appetite loss, hiding, or symptoms associated with columnaris.
Possible signs in birds include sneezing, wheezing, nasal discharge, fluffed feathers, lethargy, eye irritation, appetite loss, or changes in droppings. Similar symptoms may have different causes, so professional diagnosis is recommended when available.
How long should I treat with Fix Doxy 100 mg?
Follow the current bottle label. Treatment may generally continue for approximately 5 to 10 days unless a veterinarian advises otherwise. The supplied information states that treatment should be stopped and professional guidance requested if no improvement is seen after five days.
What size aquarium can one Fix Doxy tablet treat?
The supplied label guidance uses one 100 mg tablet for every 15 gallons, or approximately 57 litres, of treatment water.
Does Fix Doxy work in saltwater aquariums?
Fix Doxy is presented for use with ornamental fish in freshwater and saltwater treatment systems. A separate hospital tank is recommended whenever possible.
Can I use Fix Doxy in my main display or community tank?
A separate hospital or quarantine tank is preferred. This helps protect the main biological filter, prevents exposure of sensitive invertebrates, and makes it easier to monitor the treated fish and water quality.
Will Fix Doxy harm my aquarium's biofilter?
Antibacterial treatments may affect beneficial filter bacteria. Monitor ammonia and nitrite during treatment and use a separate treatment tank whenever possible.
Can Fix Doxy be used for pigeons and other pet birds?
Fix Doxy is presented for non-food pet birds, including racing pigeons. The correct amount depends on the bird, its weight, and the method of administration. Follow the label or the instructions of an avian veterinarian.
Can I combine Fix Doxy with other fish treatments?
Do not mix Fix Doxy with other treatments unless a qualified veterinarian specifically recommends the combination.
What should I do if my fish or bird is not improving on Fix Doxy?
Stop treatment and contact an aquatic or avian veterinarian if symptoms worsen or no improvement is seen within the period stated on the product label.
How should I store Fix Doxy tablets?
Store the bottle tightly closed in a cool, dry location away from direct sunlight, excessive heat, moisture, children, and pets. Follow all storage information printed on the current bottle.
How should I dispose of water or filter media that contained Fix Doxy?
Follow the product label and applicable local disposal requirements. Avoid releasing concentrated medication into drains, natural waterways, or outdoor water systems. Contact your local waste or water authority when disposal instructions are unclear.
More Fish & Bird Treatments
Fix Mox (Amoxicillin) 250/500 mg
A treatment for fin rot, dropsy, ulcers, and other bacterial infections in ornamental fish. Available in 30-count and 100-count capsules.
Shop Fix Mox →Fix Zole (Metronidazole) 250/500 mg
Targets anaerobic bacteria and protozoa including Hexamita and hole-in-the-head disease in ornamental fish. Available in 60-count bottles.
Shop Fix Zole →Fix Zithro (Azithromycin) 250 mg
A treatment for fin rot, columnaris, gill disease, and avian respiratory concerns. Available in 12-count and 30-count tablets.
Shop Fix Zithro →Fix Cin (Clindamycin) 150 mg
A treatment for Gram-positive bacterial infections, including skin and soft-tissue concerns in ornamental fish.
Shop Fix Cin →Fix Sulfa (SMZ/TMP) 960 mg
A treatment for a range of bacterial infections in ornamental fish.
Shop Fix Sulfa →Fix Pen (Penicillin) 500 mg
A treatment for Gram-positive bacterial infections in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flex (Cephalexin) 250/500 mg
A treatment for fin rot, ulcers, and bacterial skin infections in ornamental fish.
Shop Fix Flex →Fix Flox (Ciprofloxacin) 500 mg
A treatment for Gram-negative bacterial infections, including fin rot, ulcers, columnaris, and septicemia in ornamental fish.
Shop Fix Flox →Browse All Treatments
Explore our complete Fish & Bird Treatments Collection for more Fix line products and related treatments.
Explore the Collection →Guides and Treatment Tips
Visit the Fish & Bird Treatments Blog for practical care guides, water-care advice, and treatment tips.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, duration, storage, and warnings are taken from the current product label for this item.
Specification Validation
Key details such as ingredient names and strengths, where applicable, are cross-checked against the manufacturer’s product specifications to reduce the risk of labeling mistakes.
Consistency Checks
We review for internal consistency, including matching directions and storage language across sections, and remove wording that could overpromise results.
Updates
We update pages when label directions, packaging, or manufacturer information changes.
See something that does not match the product you received? Please contact us so we can review and update the page.
Fish Azithromycin 250mg | Aquarium Fish Antibiotic
Regular price $39.99 Save $-39.99Fish Azithromycin 250mg | Aquarium Fish Antibiotic
Fish Zithro (Fix Zithro) supplies 250 mg of azithromycin per tablet and is an antibacterial treatment for ornamental aquarium fish and non-food pet birds.
It is often selected to help manage suspected bacterial problems such as fin and tail rot, columnaris, gill disease, and early respiratory signs in pet birds.
Often called Bird Zithro or Fish Zithro in the hobby community, Fix Zithro is a replacement for the discontinued Thomas Labs Bird Zithro, Fish Zithro, and Aqua Zithro 250 mg products.
This azithromycin tablet from the Aqua Soma Labs Fix range is used for common problems such as fin and tail rot, columnaris, gill disease, bacterial hemorrhagic septicemia, and other bacterial infections in freshwater and saltwater aquariums.
Bird keepers may also use it under veterinary guidance for mild upper respiratory tract infections, suspected Mycoplasma concerns, or conditions associated with Chlamydia psittaci, including psittacosis, parrot fever, and ornithosis in pigeons and other pet birds.
Azithromycin helps slow or stop the growth of certain bacteria affecting the gills, skin, and respiratory tract.
When used as directed, it works best alongside appropriate husbandry, clean water, stable environmental conditions, and suitable nutrition.
Fix Zithro from Aqua Soma Labs is available in bottles of 12 or 30 tablets with fresh expiration dates.
The two bottle sizes provide flexible options for hobbyists maintaining a single hospital tank, several community aquariums, or an aviary under veterinary guidance.
Use Fix Zithro when early signs of bacterial stress appear. Symptoms may differ between fish and birds, so the lists below separate the most common signs by species.
Fish-Specific Symptoms
- Clamped or frayed fins associated with fin and tail rot
- Red or cloudy patches on the body
- Fuzzy patches that may suggest columnaris
- Pop-eye or exophthalmia
- Gill irritation or labored gill movement
- Secondary bacterial problems around gill-fluke damage
- Listlessness or persistent appetite loss
Bird-Specific Symptoms
- Sneezing or nasal discharge
- Upper respiratory tract infection signs
- Swollen eyes or sinus irritation
- Suspected Mycoplasma-related concerns
- Signs associated with Chlamydia psittaci or parrot fever
- Ruffled feathers or a fluffed-up posture
- Reduced activity or appetite loss
Address suspected bacterial problems early, maintain clean water, and consult an aquatic or avian professional whenever one is available.
Combining treatment with proper husbandry gives fish and birds a better opportunity to recover while helping keep the aquarium or aviary stable.
Order online for same-day dispatch on qualifying orders placed before 1:30 p.m. CT, Monday through Friday. Fix Zithro ships directly from our United States warehouse through USPS or UPS.
Bird Zithro vs Fix Zithro: What Changed?
If you previously purchased Thomas Labs Bird Zithro, Fish Zithro, or Aqua Zithro, here is what has changed and what remains the same.
Same Azithromycin, Same Strength
Fix Zithro contains the same 250 mg of azithromycin per tablet associated with Bird Zithro, Fish Zithro, and Aqua Zithro.
New Manufacturer
Fix Zithro is made by Aqua Soma Labs in the United States, replacing the discontinued Thomas Labs product line.
Same Crushable Tablet Form
Fix Zithro uses a crushable tablet format that can be dissolved in aquarium water or administered to birds exactly as directed by an avian veterinarian.
12-Count and 30-Count Options
Choose a 12-count bottle for smaller setups or occasional use, or a 30-count bottle for multiple tanks or veterinarian-directed aviary management.
Benefits of Fix Zithro for Fish & Birds
Bacterial Support for Fish & Birds
Fix Zithro provides azithromycin for ornamental fish and non-food pet birds. It may help manage fin and tail rot, columnaris, gill disease, and early respiratory or ornithosis-complex signs when used as directed.
Ready to Use Promptly
Keeping Fix Zithro properly stored means treatment is available when early bacterial signs appear. Avian use should still follow professional veterinary guidance.
Helps With Internal and External Problems
Azithromycin may be used for skin lesions, ulcers, fin damage, and internal bacterial concerns in a hospital tank, as well as part of a veterinarian-directed plan for respiratory or Mycoplasma-related concerns in birds.
Consistent 250 mg Tablets
Each tablet contains a consistent 250 mg amount, simplifying treatment calculations across different aquarium volumes.
Easy to Prepare
Crushable tablets can be dissolved in aquarium water or administered to birds in the exact form and amount directed by an avian veterinarian.
Freshwater, Saltwater & Aviary Setups
Fix Zithro can be used in properly prepared freshwater or marine treatment systems and may be considered for pigeons and ornamental birds under veterinary supervision.
Ideal for Hospital Tanks and Quarantine
A separate hospital tank or treatment enclosure reduces unnecessary exposure of healthy animals and allows more accurate observation and treatment control.
Usage Guidelines & Instructions
Set Up a Separate Treatment Area
Move affected fish to a dedicated hospital or quarantine tank.
Where practical, birds requiring treatment should be separated into an appropriate treatment enclosure under veterinary guidance.
Separation helps protect healthy tank mates or flock members and allows more accurate observation and treatment.
Directions for Fish Aquariums
Dissolve one 250 mg tablet per 10 gallons or 38 litres of water in the hospital tank.
Mix the tablet in a clean cup of aquarium water first, then distribute the prepared solution evenly around the treatment tank.
Repeat the treatment every 24 hours for 5 to 7 days while closely monitoring water quality and fish behavior.
Follow the current bottle label or an aquatic veterinarian's instructions when they differ from this quick-reference information.
Use in Pet Birds Under Veterinary Guidance
Administer Fix Zithro to pigeons and other non-food pet birds only under the direction of an avian veterinarian.
The veterinarian should determine the correct amount for the bird's species, weight, condition, frequency, and treatment duration.
Tablets may be given whole, divided, or crushed and mixed with food or drinking water only as specifically instructed.
Maintain Water Quality & Finish Treatment
Perform partial water changes when needed between treatments to keep ammonia and nitrite low.
Maintain strong aeration throughout treatment.
Continue for the complete recommended duration, even if the animal appears better, unless a veterinarian advises otherwise.
If no improvement appears after several days, or symptoms worsen, consult an aquatic or avian professional.
Fix Zithro Amounts by Aquarium Size
| Tank volume | Azithromycin per use | 250 mg tablets |
|---|---|---|
| 10 gallons (38 L) | 250 mg | 1 tablet |
| 20 gallons (76 L) | 500 mg | 2 tablets |
| 30 gallons (114 L) | 750 mg | 3 tablets |
| 40 gallons (151 L) | 1,000 mg | 4 tablets |
| 55 gallons (208 L) | Approximately 1,375 mg | 5 to 6 tablets |
Amounts for Pet Birds
Bird amounts are determined by body weight rather than aquarium-water volume, so there is no universal bird chart.
The appropriate amount depends on the species, body weight, condition being treated, administration method, and overall health of the bird.
An avian veterinarian must determine the amount, frequency, and duration.
Do not estimate an avian amount independently or use the aquarium chart for birds.
What to Expect During Treatment
Days 1 to 2
Fish may hide or eat less, and treatment water may look slightly cloudy. Maintain the treatment schedule and keep aeration strong.
Days 3 to 5
Look for fin damage or red patches that stop spreading, returning appetite, and steadier breathing. Seek professional guidance if the fish worsen or no improvement appears by day five.
Days 5 to 7
Complete the recommended treatment even when improvement appears. Afterward, perform a partial water change and restore activated carbon.
What You Need for Treatment
Prepare the following supplies before starting treatment:
- A separate hospital or quarantine tank
- A heater suitable for the fish species
- An air stone or established sponge filter
- An ammonia and nitrite test kit
- A suitable aquarium dechlorinator
- A small net for careful transfer
- A clean cup for dissolving each tablet
Pro Tip: Quarantine affected fish and birds away from healthy companions whenever practical. A dedicated treatment setup makes observation, water changes, and treatment control easier while reducing unnecessary exposure.
How Fix Zithro Works
Azithromycin is the active ingredient in Fix Zithro, supplied at 250 mg per tablet.
In practical terms, azithromycin helps slow or stop the growth of certain susceptible bacteria affecting the gills, skin, and respiratory tract of ornamental fish and non-food pet birds.
The remainder of each tablet consists of standard inactive ingredients that help hold the tablet together, maintain stability during storage, and allow the tablet to disperse when mixed with aquarium water.
Bird administration should follow the exact preparation and delivery method supplied by an avian veterinarian.
Safety and Tank Notes
When used as directed, Fix Zithro generally causes no problems in ornamental fish and non-food pet birds.
Incorrect amounts, unnecessarily prolonged use, or repeated antibacterial treatment can increase the risk of side effects and antibacterial resistance.
Fish
Azithromycin-based aquarium treatment may cause temporary hiding, mild water cloudiness, reduced activity, or decreased appetite.
If severe distress appears, including rapid gill movement, loss of balance, surface gasping, or remaining on the bottom, stop treatment, improve aeration, perform an appropriate water change, and seek aquatic veterinary advice.
Birds
Possible reactions may include reduced appetite, loose or changed droppings, and lethargy, particularly when the amount is too high or the bird is sensitive.
If a bird becomes fluffed up, inactive, has difficulty breathing, or stops eating, discontinue treatment and contact an avian veterinarian.
Invertebrates
Do not use Fix Zithro in display aquariums containing shrimp, snails, corals, or other sensitive invertebrates whenever a separate treatment tank is available.
Strong antibacterial treatments may harm sensitive species or disrupt the aquarium ecosystem.
Safe Use in Your System
Treat fish in a hospital or quarantine tank whenever possible.
Remove activated carbon and switch off UV sterilization during treatment. Monitor ammonia, nitrite, oxygen, and temperature closely.
Do not combine Fix Zithro with other antibacterial products unless specifically advised by a veterinarian.
Important Safety Warning
Fix Zithro is intended for ornamental aquarium fish and non-food pet birds only. It is not intended for animals raised for food.
Store tablets in their original container in a cool, dry location protected from direct sunlight, excessive heat, and moisture.
Keep the container tightly closed and out of reach of children and animals.
Always follow the directions printed on the current product label.
Shipping & Returns
Shipping Policy
Orders ship from our United States warehouse within one business day through USPS or UPS.
Same-day dispatch may be available for qualifying orders placed before 1:30 p.m. CT, Monday through Friday.
Shipping rates and estimated delivery times are calculated at checkout.
Review Shipping Policy →Refund Policy
If there is an issue with your order, eligible items may be returned or exchanged within 30 days according to the current store guidelines.
Review the full refund policy before returning any item.
Review Refund Policy →Frequently Asked Questions
What is Fix Zithro used for in fish and birds?
Fix Zithro contains azithromycin and is used for certain bacterial concerns in ornamental aquarium fish. These may include fin and tail rot, columnaris, gill disease, red or cloudy body areas, and certain internal bacterial problems.
In non-food pet birds, it may form part of a veterinarian-directed plan for certain respiratory, Mycoplasma-related, or Chlamydia psittaci concerns.
What is the difference between Bird Zithro and Fix Zithro?
Fix Zithro is the current Aqua Soma Labs product replacing discontinued Thomas Labs Bird Zithro and Fish Zithro products. It provides the familiar 250 mg azithromycin tablet strength in updated packaging.
Is Fix Zithro a replacement for Aqua Zithro?
Fix Zithro is presented as the current Aqua Soma Labs replacement for older Aqua Zithro products and provides 250 mg of azithromycin per tablet.
Is Fix Zithro the same as Fish Zithro?
Fix Zithro is intended as the updated replacement for discontinued Fish Zithro products, with the same 250 mg azithromycin tablet strength and updated branding.
Where can I buy azithromycin for fish online?
Fix Zithro 250 mg tablets can be ordered through this online store in 12-count or 30-count bottles and shipped according to the current store shipping policy.
Is azithromycin stronger than amoxicillin for fish?
Azithromycin and amoxicillin are different antibacterial ingredients with different activity profiles. One is not automatically better or stronger for every infection. The appropriate choice depends on the suspected organism and the condition being treated.
How do I know if my fish might need azithromycin?
Possible bacterial signs include frayed fins, fuzzy or red body patches, cloudy areas, gill irritation, pop-eye, appetite loss, and reduced activity.
Similar signs may also be caused by parasites, fungal conditions, injuries, or poor water quality, so professional assessment is recommended when the cause is unclear.
Is azithromycin for birds the same as fish azithromycin?
Fix Zithro contains azithromycin, but bird administration is based on body weight, species, condition, and veterinary instructions. Aquarium calculations must not be used for birds.
What size aquarium can one Fix Zithro tablet treat?
The supplied aquarium guideline uses one 250 mg tablet per 10 gallons or approximately 38 litres of treatment water.
Is fish azithromycin available in 500 mg?
This Fix Zithro product is supplied in a 250 mg tablet strength. A 500 mg treatment amount would require two 250 mg tablets according to the supplied aquarium chart.
How long should I treat with Fix Zithro?
The supplied directions describe one treatment every 24 hours for approximately 5 to 7 days. Always follow the current bottle label or veterinary instructions.
How soon should I see improvement?
Improvement may appear within three to five days through steadier breathing, returning appetite, improved activity, and bacterial lesions that stop spreading.
Seek professional advice if the animal becomes worse or no improvement appears after several days.
What should I do after finishing treatment?
Follow the product label, perform an appropriate partial water change, and restore activated carbon if normally used. Continue monitoring water quality and the condition of the treated fish.
Can I use Fix Zithro in my main community or reef tank?
A separate hospital tank is preferred. This reduces unnecessary exposure of healthy fish and sensitive invertebrates and helps protect the display aquarium's biological filtration.
Does Fix Zithro work in saltwater aquariums?
Fix Zithro is presented for use in properly prepared freshwater and saltwater treatment tanks. A separate hospital tank is especially important for marine systems containing corals or invertebrates.
Can Fix Zithro be used for racing pigeons?
Fix Zithro may be considered for non-food pet birds, including racing pigeons, only under the direction of an avian veterinarian who determines the correct amount and duration.
Can I combine Fix Zithro with other fish treatments?
Do not combine Fix Zithro with other antibacterial or aquarium treatments unless a qualified veterinarian specifically recommends the combination.
Can Fix Zithro treat fungal, viral, or parasitic infections?
Fix Zithro is an antibacterial product. It should not be expected to treat fungal, viral, or parasitic conditions unless a professional has identified a separate appropriate reason for its use.
Is Fix Zithro safe for betta fish and small aquariums?
Small aquariums require careful volume calculations. The supplied guide is one 250 mg tablet per 10 gallons, so a smaller tank may require an accurately divided amount. Follow the bottle label or consult an aquatic veterinarian rather than estimating.
How should I store and dispose of Fix Zithro tablets?
Store tablets tightly closed in a cool, dry place protected from direct sunlight and moisture.
Follow the current label and applicable local requirements when disposing of unused tablets, treatment water, or filter media. Avoid releasing concentrated treatment into natural waterways.
More Fish & Bird Treatments
Fix Mox (Amoxicillin) 250/500 mg
A treatment for fin rot, dropsy, ulcers, and other bacterial concerns in ornamental fish. Available in 30-count and 100-count capsules.
Shop Fix Mox →Fix Zole (Metronidazole) 250/500 mg
Targets certain anaerobic organisms and protozoa associated with Hexamita and hole-in-the-head concerns. Available in 60-count bottles.
Shop Fix Zole →Fix Doxy (Doxycycline) 100 mg
A treatment for columnaris, respiratory concerns, and Mycoplasma-related problems in ornamental fish and non-food pet birds.
Shop Fix Doxy →Fix Cin (Clindamycin) 150 mg
A treatment for certain Gram-positive bacterial concerns, including skin and soft-tissue problems in ornamental fish.
Shop Fix Cin →Fix Sulfa (SMZ/TMP) 960 mg
A treatment used for a range of bacterial concerns affecting ornamental aquarium fish.
Shop Fix Sulfa →Fix Pen (Penicillin) 500 mg
A treatment for certain Gram-positive bacterial concerns in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flex (Cephalexin) 250/500 mg
A treatment for fin rot, ulcers, and certain bacterial skin concerns in ornamental fish and non-food pet birds.
Shop Fix Flex →Fix Flox (Ciprofloxacin) 500 mg
A treatment for certain Gram-negative bacterial concerns including fin rot, ulcers, columnaris, and septicemia.
Shop Fix Flox →Browse All Treatments
Explore our complete Fish & Bird Antibacterial Collection for additional Fix line products and related treatments.
Explore the Collection →Guides and Treatment Tips
Visit the Fish & Bird Antibacterial Care Blog for practical care guides, aquarium water advice, and treatment information.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, duration, storage information, and warnings are taken from the current product label for this item.
Specification Validation
Key details such as the active ingredient, tablet strength, and bottle counts are cross-checked against available manufacturer specifications.
Consistency Checks
Product content is reviewed for consistent strengths, directions, safety information, and storage details throughout the page.
Updates
Pages are updated when the product label, packaging, tablet count, manufacturer information, or directions change.
See something that does not match the product you received? Please contact us so the information can be reviewed and updated.
Fish Mox Amoxicillin 250mg & 500mg | Fish Antibiotic
Regular price $24.99 Save $-24.99Fish Mox Amoxicillin 250mg & 500mg | Fish Antibiotic
Fish Mox (Fix Mox) is a fish amoxicillin treatment in 250 mg and 500 mg capsules for ornamental aquarium fish and non-food pet birds.
In freshwater and saltwater tanks it is used for common bacterial problems including dropsy or body swelling, fin and tail rot, columnaris, hemorrhagic septicemia, red streaks, gill disease, swim bladder infections, abscesses, and skin ulcers.
With an avian veterinarian's guidance, the same capsules can be part of an amoxicillin plan for problems such as crop infections and salmonella or paratyphoid in pigeons and other pet birds.
Fix Mox gives you a 250 mg or 500 mg strength, so you can match it to the job: a small hospital tank, a larger community aquarium, or, with veterinary input, a loft or aviary.
It is the current replacement for the discontinued Thomas Labs Fish Mox, also known as fishmox. The 250 mg option stands in for the original strength, and the 500 mg option covers what aquarists knew as Fish Mox Forte and Aqua Mox.
Stock ships from our United States warehouse with fresh expiration dates and clearly printed strengths.
Start treatment early, at the first signs of bacterial stress. Those signs differ between fish and birds, so use the lists below to know what to watch for.
Fish-Specific Symptoms
- Fin and tail rot, including frayed or rotting fins
- Dropsy or body swelling
- Pop-eye or bulging eyes
- Red streaks or open sores on the body
- Skin ulcers and abscesses
- Columnaris and gill disease
- Lethargy, rapid breathing, or appetite loss
Bird-Specific Symptoms Under Veterinary Guidance
- Crop infections
- Suspected salmonella or paratyphoid
- Fluffed-up feathers, lethargy, or inactivity
- Decreased appetite
- Loose or changed droppings
- Labored or difficult breathing
For birds, only use Fix Mox when an avian veterinarian has recommended amoxicillin for a specific problem. Catching an infection early, paired with clean water and good housing, gives your fish and birds the best chance to recover.
Order online and enjoy same-day dispatch on orders placed before 1:30 p.m. CT, Monday through Friday. Fix Mox ships directly from our United States warehouse via USPS or UPS.
Fish Mox vs Fix Mox: What Changed?
If you used to buy Fish Mox, Fish Mox Forte, or Aqua Mox, those brands are now discontinued or hard to find. Fix Mox from Aqua Soma Labs uses the same amoxicillin at the same strengths and steps in as a direct replacement for aquarium use.
Same Amoxicillin Inside
Fish Mox and Fix Mox both contain amoxicillin at 250 mg or 500 mg per capsule, the strengths aquarists have relied on for years.
Updated Labeling & Packaging
Fix Mox carries clear, modern labeling, with usage guidance, amoxicillin strength, and storage notes printed on the bottle.
Same Capsule Form
Pull-apart capsules dissolve in tank water, matching the format aquarists knew from Thomas Labs Fish Mox or Aqua Mox.
Fresh Stock & Current Expiration Dates
Every bottle ships with recent production and clearly printed expiration dates.
Benefits of Fix Mox for Fish & Birds
Covers Common Fish Infections
As an aquarium antibacterial treatment, amoxicillin is used against many of the bacteria behind dropsy, fin and tail rot, red streaks, gill disease, swim bladder infections, and skin ulcers in freshwater and saltwater tanks.
Handles External and Internal Problems
Use it for outward signs such as frayed fins, open sores, or red patches, and for internal infections such as hemorrhagic septicemia that bring swelling, lethargy, or appetite loss. Treat affected fish in a hospital tank.
Flexible 250 mg and 500 mg Strengths
Amoxicillin in a 500 mg or 250 mg capsule lets you scale from a small quarantine tank to a larger system. A common guide is 250 mg per 10 gallons or 500 mg per 20 gallons.
Keep a Bottle on Hand
Bacterial problems move quickly, so keeping Fix Mox stored properly means it is available at the first sign of a bacterial problem in your aquarium.
Easy to Prepare for Fish and Vet-Directed Birds
The capsules pull apart, and the contents dissolve in tank water. Under avian veterinary guidance, the contents may be mixed into soft food or water for birds with specific bacterial problems.
Built for Hospital and Quarantine Tanks
A separate treatment tank lets you remove carbon and UV, maintain stable water quality, and watch sick fish without treating healthy tank mates or sensitive invertebrates.
A Modern Swap for Discontinued Brands
When older Thomas Labs Fish Mox or Aqua Mox products are unavailable, Fix Mox provides a modern replacement with clear strength labels and fresh stock.
Usage Guidelines & Instructions
Set Up a Separate Treatment Area
Move sick fish to a dedicated hospital or quarantine tank before you dose. Take out activated carbon and switch off UV sterilizers, since both can remove amoxicillin from the water.
A 20% to 25% water change before the first dose lowers stress and starts treatment with cleaner water.
Directions for Fish Aquariums
Follow the label guide of 250 mg amoxicillin per 10 gallons or 38 litres, or 500 mg per 20 gallons or 76 litres.
Open the capsule, stir the powder into a cup of tank water, then pour it evenly around the treatment tank.
Repeat every 24 hours for 5 to 10 days, with a partial water change between doses. If nothing improves after about five days, or fish look worse, stop and ask an aquatic veterinarian.
Use in Pet Birds Under Veterinary Guidance
Use Fix Mox in pigeons and other non-food pet birds only when an avian veterinarian directs it.
The veterinarian sets the correct amount for the bird's weight, how often to give it, and how long to continue.
Capsules may be opened into soft food or drinking water so the bird receives the full intended amount, but follow the veterinarian's exact instructions rather than estimating.
Maintain Water Quality and Finish the Treatment
During treatment, monitor ammonia, nitrite, temperature, and aeration.
Finish the full treatment unless a veterinarian says otherwise. Stopping too early may allow symptoms to return.
Afterward, perform a partial water change and restore activated carbon to help remove remaining amoxicillin.
Fix Mox Amounts by Aquarium Size
| Tank volume | Amoxicillin per use | 250 mg capsules | 500 mg capsules |
|---|---|---|---|
| 10 gallons (38 L) | 250 mg | 1 capsule | Not applicable |
| 20 gallons (76 L) | 500 mg | 2 capsules | 1 capsule |
| 30 gallons (114 L) | 750 mg | 3 capsules | 1 capsule plus one 250 mg capsule |
| 40 gallons (151 L) | 1,000 mg | 4 capsules | 2 capsules |
| 55 gallons (208 L) | Approximately 1,375 mg | 5 to 6 capsules | Approximately 3 capsules |
What to Expect During Treatment
Days 1 to 2
Fish may hide or eat less, and the water may appear slightly cloudy. Keep dosing on schedule and maintain strong aeration.
Days 3 to 5
Look for sores or red patches that stop spreading, returning appetite, and steadier breathing. If there is no change by day five, or fish look worse, seek aquatic veterinary advice.
Days 5 to 10
Even when fish improve, complete the recommended treatment. After treatment, perform a partial water change and restore activated carbon.
What You Need for Treatment
A little preparation before the first dose saves trouble later.
- A separate hospital or quarantine tank so the full display aquarium is not treated
- A heater and air stone or sponge filter for stable temperature and strong aeration
- An ammonia and nitrite test kit for monitoring water quality
- A dechlorinator for water changes between doses
- A small net and clean cup for transferring fish and preparing each dose
Pro Tip: Treat sick fish in a separate hospital tank rather than the main display whenever possible. This protects the main biological filter and sensitive invertebrates while concentrating the treatment where it is needed.
How Fix Mox Works
Each Fix Mox capsule contains amoxicillin trihydrate at a strength of 250 mg or 500 mg.
Amoxicillin is an antibacterial used against many Gram-positive and some Gram-negative bacteria, including bacteria associated with fin and tail rot, skin ulcers, red streaks, and certain gill infections in ornamental fish.
Alongside the amoxicillin, each capsule contains standard ingredients that hold the capsule contents together and help them disperse properly in aquarium water or, for birds under veterinary guidance, in soft food.
Safety and Tank Notes
When used at the correct amount, Fix Mox usually causes no problems for ornamental fish or pet birds. The risk of side effects increases with excessive amounts, unnecessarily prolonged treatment, or use in an already severely stressed animal.
Unnecessary or repeated use can also contribute to antibacterial resistance.
Fish
Amoxicillin may cause temporary hiding, mild water cloudiness, or reduced appetite during treatment.
If a fish shows rapid gill movement, loss of balance, surface gasping, or remains on the bottom, stop treatment, improve aeration, add clean dechlorinated water, and contact an aquatic veterinarian.
Birds
When mixed into food or drinking water, amoxicillin may cause reduced appetite, loose or changed droppings, or lethargy, especially if the amount is too high or the bird is sensitive.
A fluffed-up or inactive bird, or one that has difficulty breathing or stops eating, should stop treatment and receive avian veterinary attention.
Invertebrates
Do not use Fix Mox in display tanks containing shrimp, snails, or other sensitive invertebrates.
Move affected fish to a separate hospital or quarantine tank whenever possible.
Safe Use in Your System
Remove activated carbon and switch off UV sterilization during treatment. Monitor ammonia, nitrite, temperature, and oxygen levels.
Do not combine Fix Mox with other treatments unless a veterinarian specifically advises it.
Important Safety & Storage Information
Fix Mox is for aquarium and ornamental fish and non-food pet birds only. It is not for animals raised for food.
If you are sensitive to penicillins, avoid direct contact with the capsule contents. Wash your hands after handling and wear suitable gloves when needed.
Store the capsules in their original container in a cool, dry location at 59–86°F or 15–30°C. Protect them from moisture and direct sunlight, keep the lid closed, and store out of reach of children and animals.
Shipping & Returns
Shipping Policy
Orders ship from our United States warehouse within one business day through USPS or UPS. Rates and estimated delivery times are calculated at checkout.
For complete shipping details, review our shipping policy.
Review Shipping Policy →Refund Policy
If there is an issue with your order, eligible products may be returned or exchanged within 30 days according to our store guidelines.
Review the complete refund policy before sending a product back.
Review Refund Policy →Frequently Asked Questions
What is Fix Mox used for in fish and birds?
Fix Mox contains amoxicillin and is intended for certain bacterial problems in ornamental fish. These may include fin and tail rot, dropsy, red streaks, ulcers, abscesses, columnaris, septicemia, and certain gill infections.
For non-food pet birds, use should only occur under the guidance of an avian veterinarian.
Is Fix Mox the same as Fish Mox or Aqua Mox?
Fix Mox is presented as the current Aqua Soma Labs replacement for discontinued Fish Mox, Fish Mox Forte, and Aqua Mox products. It is available in the familiar 250 mg and 500 mg amoxicillin capsule strengths.
Is Fix Mox, also called fish mox, the same as amoxicillin?
The active ingredient in Fix Mox is amoxicillin trihydrate. Each capsule is clearly labeled as containing either 250 mg or 500 mg.
Is Fix Mox the same as fish amoxicillin 500 mg?
The 500 mg Fix Mox option contains 500 mg of amoxicillin per capsule. A separate 250 mg strength is also available.
Where can I buy Fish Mox amoxicillin online?
Fix Mox capsules can be ordered through this online store and shipped from our United States warehouse according to the current shipping terms.
Can Fix Mox be used for dogs or cats?
No. This product is labeled for ornamental aquarium fish and non-food pet birds. It is not intended for dogs, cats, humans, or food-producing animals.
What is the difference between Fish Mox and Fish Mox Forte?
The traditional Fish Mox product used the 250 mg strength, while Fish Mox Forte referred to the stronger 500 mg capsule. Fix Mox is available in both 250 mg and 500 mg strengths.
How do I know if my fish might need a fish amoxicillin treatment?
Possible bacterial signs include frayed or rotting fins, swelling, red streaks, sores, ulcers, bulging eyes, abnormal breathing, lethargy, or appetite loss.
Similar signs can also result from poor water quality, parasites, fungal problems, or other conditions, so professional assessment is recommended when the cause is uncertain.
Can I use Fix Mox in my main community or reef tank?
A separate hospital or quarantine tank is preferred. This reduces exposure of healthy tank mates and sensitive invertebrates and helps protect the main aquarium's biological filtration.
How much Fix Mox should I use per gallon?
The supplied label-style reference is 250 mg per 10 gallons, which is approximately 25 mg per gallon. Follow the current bottle label rather than relying only on a general calculation.
How long should I treat with Fix Mox?
The supplied instructions describe treatment every 24 hours for approximately 5 to 10 days, with partial water changes between doses. Always follow the current product label.
Does Fix Mox work in saltwater aquariums?
Fix Mox is presented for ornamental fish in freshwater and saltwater treatment systems. A separate hospital tank is recommended, especially for marine aquariums containing invertebrates.
Is Fix Mox safe for pet birds, and can I treat more than one bird?
Use in non-food pet birds should only occur under avian veterinary guidance. The correct amount depends on the species, body weight, condition, administration method, and number of birds being treated.
Will Fix Mox affect beneficial bacteria in my aquarium?
Antibacterial treatments may interfere with beneficial biological filtration. Use a separate treatment tank and monitor ammonia and nitrite closely.
Can Fix Mox treat fungal, viral, or parasitic infections?
Fix Mox contains an antibacterial ingredient. It should not be assumed to treat fungal, viral, or parasitic conditions unless a qualified professional has identified an appropriate reason for its use.
Can I combine Fix Mox with other treatments?
Do not combine Fix Mox with other aquarium or bird treatments unless a veterinarian specifically recommends the combination.
What is the active ingredient in Fish Mox?
The active ingredient is amoxicillin trihydrate, supplied as either 250 mg or 500 mg per capsule.
How should I store Fix Mox capsules?
Keep the capsules in their original, tightly closed container at 59–86°F or 15–30°C. Protect the bottle from moisture, excessive heat, and direct sunlight, and keep it away from children and animals.
What should I do if my fish are not improving on Fix Mox?
Stop treatment and seek aquatic veterinary advice if the fish become worse or show no improvement after the period specified on the product label.
What is fish mox?
Fish Mox is a commonly used name for amoxicillin capsules labeled for ornamental aquarium fish. Fix Mox is the current Aqua Soma Labs product offered in 250 mg and 500 mg capsule strengths.
More Fish & Bird Treatments
Fix Zole (Metronidazole) 250/500 mg
A treatment for Hexamita, hole-in-the-head disease, and other protozoa-related problems in ornamental fish. Available in 60-count bottles.
Shop Fix Zole →Fix Doxy (Doxycycline) 100 mg
A treatment for columnaris, respiratory infections, and Mycoplasma concerns in ornamental fish and non-food pet birds. Available in 30-count and 60-count tablets.
Shop Fix Doxy →Fix Zithro (Azithromycin) 250 mg
A treatment for fin rot, columnaris, gill disease, and avian respiratory concerns. Available in 12-count and 30-count tablets.
Shop Fix Zithro →Fix Cin (Clindamycin) 150 mg
A treatment for Gram-positive bacterial problems, including skin and soft-tissue concerns, in ornamental fish.
Shop Fix Cin →Fix Sulfa (SMZ/TMP) 960 mg
A treatment used against a range of bacterial infections in ornamental fish.
Shop Fix Sulfa →Fix Pen (Penicillin) 500 mg
A treatment for Gram-positive bacterial problems in ornamental fish and non-food pet birds.
Shop Fix Pen →Fix Flex (Cephalexin) 250/500 mg
A treatment for fin rot, ulcers, and bacterial skin infections in ornamental fish and non-food pet birds.
Shop Fix Flex →Fix Flox (Ciprofloxacin) 500 mg
A treatment for Gram-negative bacterial problems, including fin rot, ulcers, columnaris, and septicemia, in ornamental fish and non-food pet birds.
Shop Fix Flox →Browse All Treatments
Explore our complete Fish & Bird Antibacterials Collection for more Fix line products and related treatments.
Explore the Collection →Guides and Treatment Tips
Visit the Fish & Bird Treatments Blog for practical usage guides, water-care advice, and treatment tips.
Visit the Blog →Transparency & Verification
How Product Information Is Verified
Who is responsible for this page: The store editorial team responsible for reviewing and maintaining product information.
Verification snapshot: This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.
How We Verify Product Information
Label-First Accuracy
Directions, duration, storage, and warnings are taken from the current product label for this item.
Specification Validation
Key details such as ingredient names and strengths are cross-checked against manufacturer specifications to reduce the risk of labeling mistakes.
Consistency Checks
We review the page for internal consistency and remove wording that could overpromise results.
Updates
Pages are updated when label directions, packaging, strengths, or manufacturer information changes.
See something that does not match the product you received? Please contact us so we can review and update the page.