Expiration Date: Fix Mox 500 – EXP: 8/2027 Fix Mox 250 – EXP: 5/2027 Fix Flex 500 – EXP: 6/2027 Fix Flex 250 – EXP: 4/2026 Fix Doxy 100 - 30 – EXP: 2/2026 Fix Doxy 100 - 60 – EXP: 6/2026 Fix Flox 500 – EXP: 4/2027 Fix Pen 500 – EXP: 6/2026 Fix Sulfa 960 – EXP: 12/2028 Fix Zithro 250 – EXP: 6/2027 Fix Zole 500 – EXP: 2/2027 Fix Zole 250 – EXP: 12/2026 Fix Cin 150 – EXP: 8/2026 Reef Flux 200mg – EXP: 2/2027 Expiration Date: Fix Mox 500 – EXP: 8/2027 Fix Mox 250 – EXP: 5/2027 Fix Flex 500 – EXP: 6/2027 Fix Flex 250 – EXP: 4/2026 Fix Doxy 100 - 30 – EXP: 2/2026 Fix Doxy 100 - 60 – EXP: 6/2026 Fix Flox 500 – EXP: 4/2027 Fix Pen 500 – EXP: 6/2026 Fix Sulfa 960 – EXP: 12/2028 Fix Zithro 250 – EXP: 6/2027 Fix Zole 500 – EXP: 2/2027 Fix Zole 250 – EXP: 12/2026 Fix Cin 150 – EXP: 8/2026 Reef Flux 200mg – EXP: 2/2027

Fish Doxycycline

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

Fish Doxycycline is a trusted, broad-spectrum antibiotic used to treat a range of bacterial infections in aquarium fish. Whether you're dealing with internal issues like hemorrhagic septicemia or external symptoms such as fin rot and mouth fungus, Fish Doxycycline 100mg offers powerful, effective relief. Commonly sold under names like Fish Doxy, Fishbiotic Doxycycline, and Aqua-Doxy, it’s a go-to solution for aquarists and breeders.

At FishAntibiotics.us, we carry high-quality, aquarium-use-only Fish Doxycycline capsules with fast U.S. shipping and no prescription required. These medications are widely used in both freshwater and marine tanks to treat bacterial outbreaks and support long-term fish health.

Why Choose Fish Doxycycline?

✅ 100mg dosage ideal for 10-gallon treatments
✅ Treats gram-positive and gram-negative bacterial infections
✅ Available as Fish Doxy, Fishbiotic Doxycycline, and Aqua-Doxy
✅ Effective for swim bladder disease, gill disease, and more
✅ No veterinary prescription needed

Common Use Cases

Fin rot and mouth fungus
Internal infections like septicemia
Swim bladder problems and gill damage
Post-quarantine fish care or injury recovery

FAQs – Fish Doxycycline

What is Fish Doxycycline used for?

Fish Doxycycline is used to treat bacterial infections in fish, including internal conditions like septicemia and external symptoms like fin rot and ulcers. It's effective in both freshwater and saltwater aquariums.

Is Fish Doxy the same as Fishbiotic Doxycycline?

Yes. Fish Doxy is a shortened name for Fish Doxycycline. Fishbiotic Doxycycline and Aqua-Doxy are branded versions containing the same active ingredient: doxycycline hyclate.

How do I dose Fish Doxycycline?

The standard dose is one 100mg capsule per 10 gallons of aquarium water. Treatments typically last 5 to 10 days depending on the severity of the infection.

Is Aqua-Doxy safe for marine tanks?

Yes, Aqua-Doxy and other fish doxycycline capsules are safe for both freshwater and saltwater tanks when used correctly. Be sure to remove carbon filters during treatment.

Do I need a prescription to buy Fish Doxycycline?

No prescription is needed. All Fish Doxycycline products at FishAntibiotics.us are sold for aquarium use without veterinary authorization.

Explore Related Treatments

Buy Fish Doxycycline 100mg capsules today and give your aquarium fish the support they need to fight infection. Trusted quality. Fast U.S. shipping. No prescription required.