
Fish Metronidazole 250 mg
Fish Metronidazole 250mg is an antiparasitic and antibacterial medication used to treat infections in ornamental fish caused by anaerobic bacteria and protozoa. It is commonly used to manage conditions such as Hexamita, Hole-in-the-Head disease, and other internal parasitic infections. Metronidazole works by disrupting the DNA of microorganisms, effectively stopping their growth.
PACK SIZE | PRICE | QTY | ADD TO CART | |
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1 Bottle | ($9/Bottle ) |
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3 Bottle | ($9/Bottle ) |
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6 Bottle | ($9/Bottle ) |
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SKU : | Status : In Stock | Coupon Code : FREE10 |
Created at : 09-04-2025 Author : Aston Carter |
Updated at : 09-04-2025 Medically Reviewd By : Dr. Peter Hales |
Fish Metronidazole 250mg is a trusted, broad-spectrum antibacterial and antiprotozoal medication formulated for use in ornamental aquarium fish. It is particularly effective in treating internal parasites and anaerobic bacterial infections, making it a top choice among aquarists for hard-to-detect, internal illnesses that don't respond to standard antibiotics.
Whether your fish are suffering from Hexamita (Hole-in-the-Head disease), intestinal parasites, or bacterial infections, Metronidazole helps restore their health quickly and effectively.
Commonly Treats:
Hexamita (Hole-in-the-Head Disease)
Intestinal parasites (flagellates like Giardia and Spironucleus)
Bacterial infections in the digestive tract
Columnaris (when used in combination treatments)
Secondary infections following parasite infestation
Foul-smelling, stringy, white feces (a common sign of internal infection)
How It Works:
Metronidazole disrupts the DNA synthesis of anaerobic bacteria and protozoa, stopping their reproduction and eliminating infection from the inside out. It is absorbed into the bloodstream, making it ideal for treating internal infections that external medications can't reach.
Key Features:
Each tablet contains 250mg of pure Metronidazole
Targets both anaerobic bacteria and protozoan parasites
Effective for internal and external infections
Safe for freshwater and saltwater aquariums
Fast-dissolving tablet for easy administration
Ideal for quarantine or hospital tank use
Dosage & Directions:
1 tablet (250mg) per 10 gallons of aquarium water
Dissolve directly in water or use as a medicated food soak
Treat once daily for 5–7 days
Perform daily 25–30% water changes during treatment
Remove activated carbon from filters during use
Optional Use in Medicated Food:
Crush tablet and mix with a small amount of fish food and garlic juice or fish-safe binder
Feed medicated food once daily for 5 days for targeted internal treatment
Precautions:
For aquarium use only – not for human or veterinary use
Not for fish intended for food
Store in a cool, dry place, out of direct sunlight
Keep out of reach of children and pets
Discontinue use if fish show signs of distress
Why Choose Fish Metronidazole 250mg?
Fish Metronidazole 250mg is a go-to solution for treating internal infections and parasitic infestations that can silently devastate your aquarium. It's safe, fast-acting, and a must-have for any serious aquarist looking to maintain a healthy aquatic environment.
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Delivery Time | 7 - 14 Days |
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What is Fish Metronidazole?
Fish Metronidazole is an antiprotozoal and anaerobic antibacterial medication used to treat internal and external infections in ornamental fish caused by parasites and anaerobic bacteria.
What does it treat in fish?
Fish Metronidazole is effective against: Hole-in-the-head disease (Hexamita) Gill and intestinal parasites (e.g., Spironucleus, Hexamita) Bacterial infections in low-oxygen environments Bloat in cichlids Flagellate protozoan infections Pop-eye (when caused by anaerobic bacteria)
Can I crush the tablet for better dosing?
Yes. Crushing the tablet helps it dissolve into the water or mix evenly into food, improving effectiveness.
Should I remove chemical filtration media?
Yes — remove carbon, Purigen, or other chemical media before dosing, as they can absorb the medication and reduce its effectiveness.
Is it safe for all fish?
Use caution or avoid use with: Sensitive invertebrates (shrimp, snails, etc.) Delicate species like small tetras or fry
Does it harm beneficial bacteria in the tank?
Unlike many antibiotics, Metronidazole is gentler on nitrifying bacteria. However, if used in high doses or with other antibiotics, it can still disrupt the nitrogen cycle — so monitor water parameters during treatment.
Can I combine it with other fish medications?
Yes, Metronidazole is often safely combined with: Praziquantel (for mixed parasite infections) Kanamycin (for severe internal infections) Still, always research combinations or consult an expert before mixing meds.
Can humans use Fish Metronidazole?
No. Even if it contains the same active ingredient, fish-grade metronidazole is not approved for human use and may lack quality control, purity, and proper storage conditions.
How should I store it?
Keep in a cool, dry place Store away from sunlight and moisture Keep tightly sealed and out of reach of children or pets
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