Fish Doxy (Doxycycline Hyclate 100mg) — 60 Capsules delivers a full supply of broad-spectrum tetracycline-class antibiotic treatment for ornamental and aquarium fish. Each bottle contains 60 capsules of 100mg Doxycycline Hyclate — enough to complete multiple full treatment courses or treat larger aquarium setups where higher dosing volume is required.
Each capsule contains 100mg of Doxycycline Hyclate — a second-generation tetracycline antibiotic that inhibits bacterial protein synthesis at the 30S ribosomal subunit, stopping harmful gram-positive and gram-negative bacteria from growing and spreading throughout your tank. The 60-capsule supply makes Fish Doxy a practical and cost-effective choice for fish keepers who want a reliable antibiotic on hand for ongoing ornamental fish care.
Fish Doxy is particularly effective against columnaris, fin rot, tail rot, bacterial gill disease, and septicemia — conditions where consistent tetracycline-class coverage is critical for recovery. Available at CalVetSupply without a vet prescription for ornamental and aquarium fish use only.
ACTIVE INGREDIENT Doxycycline Hyclate 100mg per capsule Capsule Count: 60 Capsules per bottle
HOW MANY TREATMENTS DOES 60 CAPSULES PROVIDE?
Based on 1 capsule per 10 gallons dosing guideline. Always follow product label directions.
WHAT DOES FISH DOXY TREAT?
Fish Doxy (Doxycycline Hyclate 100mg) is effective against the following bacterial conditions in ornamental freshwater and saltwater fish:
HOW TO USE FISH DOXY
Important: Doxycycline Hyclate is light-sensitive — minimize strong aquarium lighting exposure during treatment to maintain medication effectiveness.
WHEN TO USE FISH DOXY
Fish Doxy is the right choice when your ornamental fish shows:
Fish Doxy treats bacterial infections only — not effective against fungal, parasitic, or viral conditions.
PRECAUTIONS & SAFETY
FAQ
Q: How many capsules are in Fish Doxy 100mg? A: Each bottle of Fish Doxy contains 60 capsules of Doxycycline Hyclate 100mg — providing enough supply for multiple full treatment courses depending on your tank size.
Q: How long will 60 capsules last? A: For a 10-gallon hospital tank using 1 capsule per day the 60-capsule supply provides up to 60 treatment days. For larger tanks the supply will cover fewer days — see the treatment chart above for guidance based on your tank size.
Q: What is Fish Doxy used for? A: Fish Doxy (Doxycycline Hyclate 100mg) treats columnaris, fin rot, tail rot, bacterial gill disease, septicemia, popeye, mouth rot, and Aeromonas and Pseudomonas infections in ornamental aquarium fish.
Q: Do I need a prescription to buy Fish Doxy? A: No. Fish Doxy is available at CalVetSupply without a vet prescription for ornamental aquarium fish use only.
Q: What makes the 60-capsule supply the right choice? A: The 60-capsule bottle ensures you have enough Fish Doxy on hand for multiple treatment courses — ideal for fish keepers managing larger tanks, treating multiple fish, or keeping a reliable antibiotic supply ready for future use.
Q: Can Fish Doxy be used in saltwater tanks? A: Yes. Fish Doxy is effective in both freshwater and saltwater aquariums. Always follow label dosage directions.
Q: How long does Fish Doxy treatment take? A: Treat daily for 5–10 days depending on infection severity. Always complete the full course even if symptoms improve early.
Q: What if my fish shows no improvement after treatment? A: Discontinue use and consult an aquatic veterinarian. A different antibiotic class such as Fish Flox (Ciprofloxacin) may be required for resistant bacterial strains.
