Fish Zole (Metronidazole) 500mg is one of the most effective and trusted fish antibiotics for treating both bacterial and protozoan infections in ornamental and aquarium fish. Formulated with pharmaceutical-grade Metronidazole, this broad-spectrum medication targets internal and external infections such as hole-in-the-head disease, gill flukes, fin rot, and intestinal parasites.
Metronidazole for fish Zole works by disrupting bacterial and protozoan DNA, eliminating harmful microorganisms while preserving beneficial aquarium bacteria. It dissolves easily in aquarium water, ensuring uniform distribution and rapid results for both freshwater and saltwater environments.
Key Benefits
Broad-Spectrum Fish Antibiotic :
Combats both bacterial and protozoan infections, making it one of the most versatile and popular fish antibiotics available.
Effective Against Common Fish Diseases :
Treats conditions like Hole-in-the-Head Disease, Fin Rot, Tail Rot, Gill Flukes, and internal parasites such as Hexamita and Costia.
Safe for Aquarium Use :
Specially formulated for ornamental fish, with minimal disruption to beneficial bacteria that support a healthy aquatic balance.
Promotes Fast Healing & Reduced Stress :
Encourages appetite recovery and natural behavior while helping fish heal quickly from infection-related damage.
Works in Freshwater & Saltwater Tanks :
Compatible with a variety of aquarium types and species without affecting water chemistry.
When to Use Fish Zole (Metronidazole)
Use Fish Zole fish antibiotics when you notice:
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White spots or lesions on the skin or gills
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Head or body pits (hole-in-the-head disease)
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Red streaks, ulcers, or frayed fins
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Loss of appetite or lethargy
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Abnormal swelling or bloating
Always ensure symptoms are due to bacterial or protozoan infection before treatment.
Directions for Use
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Dosage: Add one tablet (500mg) per 20 gallons of aquarium water.
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Frequency: Repeat every 24 hours.
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Duration: Continue for 5–10 days, depending on infection severity.
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Maintenance: Perform partial water changes between treatments and remove activated carbon filters during dosing.
Monitor fish behavior daily. If no improvement occurs after 5 days, discontinue use and consult an aquatic veterinarian.
Active Ingredient
Storage & Safety
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Store in a cool, dry place (59°–86°F / 15°–30°C).
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Keep tightly sealed and away from moisture or sunlight.
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For aquarium and ornamental fish use only.
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Not for human consumption. Keep out of reach of children and pets.
