Fish Doxy

Barcode : 694485673028

SKU : AS-020-PET

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Regular price $69.95

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100mg

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Returns: Unused, unopened items in original packaging can be returned within 30 days of delivery with prior authorization. For pet safety, opened consumables, treats, food, and fish medications cannot be returned. Return shipping is covered by the customer unless the item arrives damaged or incorrect.

Damaged or Incorrect Orders: If your order arrives damaged or incorrect, email sales@thepetperch.com within 7 days of delivery with your order number and photos. We’ll send a replacement or issue a full refund immediately at no cost to you.

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Product Details

Fix Doxy (Doxycycline Hyclate) 100mg Capsules

Fix Doxy (Doxycycline Hyclate) provides targeted, broad-spectrum antibiotic action formulated for ornamental freshwater and marine fish. Designed to combat challenging bacterial pathogens in aquatic environments, it treats systemic and localized infections to restore health in your aquarium population. The water-soluble formula contained inside each pull-apart capsule dissolves quickly into tank water without artificial dyes or unneeded fillers.

Features and Benefits

Broad-Spectrum Tetracycline Class Antibiotic: Targets a wide range of susceptible gram-positive and gram-negative aquatic bacteria.
Precise 100 mg Dosage: Formulated in uniform 100 mg capsules to simplify dosing for small, medium, or large aquarium volumes.
Pure Powder Formulation: Contains high-potency doxycycline hyclate without unnecessary chemical additives or artificial dyes.
Effective Target Relief: Supports recovery from common bacterial conditions including fin rot, tail rot, columnaris disease, body ulcers, and gill infections.

Usage Guidelines & Instructions −

1. Quarantine Setup & Water Preparation Isolate infected fish in a separate hospital tank before initiating medication. Turn off UV sterilizers and remove chemical filtration media (such as activated carbon and ion-exchange resins), as these pull active doxycycline from the water. Perform a partial water change to optimize water clarity and minimize organic debris.

2. Aquarium Dosing Instructions Administer one 100 mg capsule per 10 gallons (38 L) of aquarium water. Open the capsule, pre-dissolve the dry powder into a cup of aquarium water, and distribute the solution evenly across the water surface. Repeat the dosage every 24 hours for 5 to 10 consecutive days. Conduct a partial water change prior to each daily redose. If no noticeable improvement is observed within 5 days, stop treatment and seek advice from a licensed aquatic veterinarian.

3. Administration in Non-Food Avian Species Fix Doxy may be administered to non-food pet birds (such as pigeons) strictly under the direct guidance, diagnosis, and prescribed dosage schedule of a licensed avian veterinarian. Follow veterinary directives exclusively regarding preparation in soft food or drinking water, dosage amounts, and treatment duration.

4. Water Quality Management & Post-Treatment Care Maintain continuous aeration and test water parameters daily for ammonia and nitrite spikes throughout medication. Always complete the designated therapeutic timeframe to ensure eradication of pathogens and prevent resistance. Upon finishing treatment, conduct a partial water change and reinsert fresh activated carbon to clear remaining medication from the system.

How Fix Doxy Works +

Fix Doxy contains doxycycline hyclate, a synthetic tetracycline derivative antibiotic.

It exerts a bacteriostatic effect by inhibiting protein synthesis in target microorganisms. By preventing bacterial cells from producing essential proteins required for reproduction, it halts infection progression and allows the fish's natural immune response to clear the remaining pathogens.

Safety and Tank Notes +

Caution: Keep out of reach of children. Fix Antibiotics are for aquarium use only. Intended for ornamental fish and/or ornamental organisms, and not intended for use with fish that are intended for human consumption.

Antibiotics can disrupt beneficial nitrifying filter media. Treating in a dedicated quarantine tank is strongly recommended. If treating the main display tank, test water parameters such as ammonia and nitrite daily.

Storage: Keep container lid tightly closed and store in a dry location at controlled room temperature of 59°–86°F (15°–30°C). Protect from direct light and excessive moisture.

Fish Doxy vs Fix Doxy: What Changed? +

If you previously used legacy brands like Thomas Labs Fish Doxy, those specific product lines are discontinued or difficult to source. Fix Doxy from SourceMax Labs serves as a direct alternative, delivering the exact same active ingredient strength and dosage format for ornamental aquatic care.

Identical Active Doxycycline Fix Doxy provides 100 mg of pharmaceutical-grade doxycycline hyclate per capsule, matching historical hobbyist formulations.

Updated Compliant Packaging Manufactured by SourceMax Labs with clear, modern labeling featuring full dosing instructions, batch codes, and expiration dating.

Dissolving Capsule Format Utilizes easy-open pull-apart capsules that dissolve cleanly into water, maintaining the familiar mix-and-pour process.

Fresh Factory Production Directly supplied from current production runs to guarantee maximum shelf stability and active potency.

Frequently Asked Questions

Do I need a prescription from a vet to buy Fix Doxy? +

No prescription is required. Fix Doxy is available over-the-counter specifically for ornamental fish and aquarium care.

What aquatic conditions does doxycycline treat in ornamental fish? +

It targets broad-spectrum bacterial pathogens responsible for fin and tail rot, columnaris disease, body ulcers, mouth fungus, and gill infections.

Can Fix Doxy be taken by humans or used on dogs or cats? +

No. Fix Doxy is strictly formulated, labeled, and sold for ornamental aquatic species and pet birds. It must never be consumed by humans or administered to mammals such as dogs or cats.

Will Fix Doxy harm the biological filter in my aquarium? +

Doxycycline is a broad-spectrum antibiotic and can impact beneficial nitrifying bacteria in your filtration system. Dosing in a separate hospital tank is strongly advised to keep your main biofilter intact.

How should I prepare the capsules for treatment? +

Pull the capsule open, mix the dry powder thoroughly into a cup of warm tank water until suspended, and pour the mixture evenly across the aquarium surface.

Should UV sterilizers and carbon filters remain off during dosing? +

Yes. Activated carbon and UV sterilizers neutralize or extract active antibiotics from the water and must be removed or turned off throughout the entire medication cycle.

How long does a typical course of treatment last? +

Daily treatments should run for a minimum of 5 days and a maximum of 10 days. If no clinical improvement is seen after 5 days, discontinue the regimen and consult an aquatic vet.

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Fish Doxy

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