Thomas Pets

Thomas Labs Fish Doxy Doxycycline 100 mg 30/60 Capsules

$69.99 USD

~~$89.99 USD~~ $69.99 USD

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Sizes 30 Capsules 60 Capsules

Quantity

Thomas Labs Fish Doxy - Doxycycline 100mg (30/60 Capsules)

Broad-Spectrum Antibiotic for Bacterial Infections in Aquarium Fish

Fish Doxy (Doxycycline) 100mg - 30/60 Capsules is a highly effective antibiotic used to treat a wide range of bacterial infections in freshwater and saltwater aquarium fish. This tetracycline-class antibiotic works against both gram-positive and gram-negative bacteria, helping restore fish health and prevent disease spread.

As part of the Thomas Labs Fish Antibiotics collection, Fish Doxy is a trusted treatment for fin rot, tail rot, columnaris, gill disease, and internal bacterial infections.

Common Fish Diseases Treated with Doxycycline

🔹 Fin Rot – Bacterial infection leading to frayed and deteriorating fins.
🔹 Tail Rot – Severe bacterial infections causing tail degradation.
🔹 Mouth Rot – Bacterial tissue damage around the mouth.
🔹 Gill Disease – Affects respiration and oxygen intake, causing stress.
🔹 Columnaris ("Cotton Wool Disease") – Produces white patches and ulcers on fish.
🔹 Internal Bacterial Infections – Causes digestive issues, bloating, and lethargy.

Untreated bacterial infections can spread rapidly, so early intervention is crucial.

Why Choose Fish Doxy (Doxycycline) from Thomas Labs?

✅ Broad-Spectrum Bacterial Treatment – Targets a wide variety of harmful bacteria.
✅ Suitable for Freshwater & Saltwater Fish – Safe for all aquarium environments.
✅ Accurate Dosing with Capsules – Minimizes waste and ensures correct treatment.
✅ Does Not Harm Biofilters – Unlike some antibiotics, doxycycline does not disrupt beneficial bacteria.
✅ High-Quality Manufacturing by Thomas Labs – A leader in fish antibiotics.
✅ Fast & Reliable Shipping – Available for immediate delivery.

Instructions for Use

Dosage Guidelines

✔ 1 capsule (100mg) per 10 gallons of water.
✔ Repeat every 24 hours for 5-10 days, based on infection severity.

Treatment Process

⚠ Remove Activated Carbon Filters before treatment to prevent medication absorption.
⚠ Perform a 20-50% water change between doses to maintain water quality.
⚠ Complete the full treatment course, even if fish show early signs of improvement.

For best results, quarantine infected fish in a separate tank to prevent disease spread.

Important Considerations

⚠ Ensure Bacterial Diagnosis – Fish Doxy only treats bacterial infections, not fungal or parasitic conditions.
⚠ Monitor Water Parameters – Maintain stable water conditions during treatment.
⚠ Light Sensitivity – Doxycycline is light-sensitive, so reduce tank lighting during dosing.
⚠ Consult an Aquatic Veterinarian – If symptoms persist, seek professional guidance.