Fish Doxy (Doxycycline) 100mg – 100 Capsules | Broad-Spectrum Fish Antibiotic

Fish Doxy Doxycycline 100mg Capsules provide powerful, broad-spectrum antibacterial treatment for freshwater and saltwater aquarium fish. With doxycycline hyclate, a proven tetracycline-class antibiotic, Fish Doxy is designed to combat serious bacterial infections like fin rot, tail rot, columnaris, and septicemia.

Ideal for hospital tanks and quarantine treatment, Fish Doxy helps restore fish health, reduce mortality, and prevent infection spread in your aquatic environment.

Key Benefits of Fish Doxy 100mg

• Broad-Spectrum Antibacterial Action: Effective against gram-positive and gram-negative pathogens

• Targets Key Infections: Treats tail rot, columnaris, ulcers, and systemic bacterial diseases

• Fast Absorption & Reliable Results: Quickly dissolves for rapid uptake in infected fish

• Saltwater & Freshwater Compatible: Safe across tank types when dosed correctly

• Prevents Secondary Infections: Stops the spread of disease in early stages

Explore more options in our Fish Doxy collection to customize your treatment approach.

Dosage & Instructions

• General Dosage: 1 capsule per 10 gallons of water (adjust based on tank volume and severity)

• Use: Dissolve in dechlorinated water in a hospital tank or quarantine setup

• Duration: Treat daily for 5–10 days

• Aftercare: Perform partial water changes and use activated carbon after treatment ends

Always consult with a professional aquarist or aquatic veterinarian for tailored dosing.

Common Symptoms Treated by Fish Doxy

• Frayed or rotting fins/tail

• Open sores or red lesions

• Cloudy eyes

• Lethargy and loss of appetite

• White or cotton-like patches

Ingredients

• Active: Doxycycline Hyclate 100mg

• Inactive: Pharmaceutical excipients to aid solubility and stability

Precautions & Warnings

• Not for use with invertebrates like shrimp or snails

• Avoid combining with other antibiotics unless directed

• Store in a cool, dry place (59°F–86°F)

• Keep out of reach of children and pets

• Dispose of used water responsibly

FAQs – Fish Doxy Doxycycline Capsules

Q: What does Fish Doxy treat?
A: Fin rot, tail rot, columnaris, and other bacterial diseases in aquarium fish.

Q: Can it be used in saltwater tanks?
A: Yes, Fish Doxy is suitable for both saltwater and freshwater aquariums.

Q: Does it harm beneficial bacteria?
A: Yes, treatment may affect biofiltration. Use a hospital tank when possible.

Q: Can I combine Fish Doxy with other treatments?
A: Only with veterinary advice to avoid harmful drug interactions.

Q: Will it stain the water?
A: Slight discoloration may occur. Perform regular water changes as needed.

Related Products

• Fish Doxy Doxycycline 100mg – 30 Capsules
• Fish Mox Amoxicillin 500mg – 100 Capsules
• Fish Zithro Azithromycin 250mg – 30 Tablets
• Fish Sulfa 960mg – 60 Tablets
• Fish Zole Metronidazole 250mg – 60 Tablets
• Fish Flex Cephalexin 500mg – 100 Capsules

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