Description
Aquasonic Methylene Blue 250ml
Aquasonic Methylene Blue 250ml (SKU: AQS21) is a high-capacity antifungal and water disinfectant essential for fish breeders, hatcheries, and multi-tank hobbyists. Highly valued for its ability to safeguard fish eggs from fungal growth, it also serves as a supportive treatment for nitrite shock, skin fungus, and external protozoan parasites. The 250ml bottle provides a long-lasting supply for frequent egg production and quarantine procedures. Suitable for both freshwater and marine aquariums, it offers a gentler alternative to stronger treatments like malachite green or formalin. While effective as a preventative measure, Methylene Blue is less potent against advanced fungal infections.
Usage & Application
When to Use
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Breeding & Hatchery Facilities: Daily or weekly use in egg incubation setups to prevent egg mortality from fungus.
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Emergency Rescue Baths: Dose in quarantine or hospital setups when treating fish suffering from heavy nitrite exposure or physical wounds.
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Prophylactic Dips: Use as a brief dip treatment for newly acquired fish to reduce external pathogen loads.
How to Use
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Egg Protection Dose: Add dropwise until breeding tank water reaches a clear, light blue tint (approx. 1–2 drops per L).
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Shake the bottle well before use. Avoid combining with other medications unless directed
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Standard Hospital Tank Dose: Remove activated carbon from filtration before treatment. Add 5 mL per 20 L of water.
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Monitor biological filter parameters if used in established setups, or perform treatment in un-substated isolation tanks.
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Perform water changes and reintroduce active carbon post-treatment to remove blue dye from the water column.
Product Specifications & Highlights
Key Features
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High Hatch Yield: Dramatically improves egg survival rates by halting fungal spores. Provides fungal protection for fish eggs
and helps safeguard eggs from fungal and bacterial infections, making it ideal for breeding tanks. -
Nitrite Shock Reversal: Boosts oxygen transport in blood during acute water quality crises.
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Economical Bulk Size: 250ml volume accommodates high-volume breeding and hatchery needs.
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Versatile Disinfectant: Effective for egg protection, dip treatments, and hospital quarantine. It is gentle and has broad-spectrum Treatment features:
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Safer Alternative to Harsh Medications: Effective for prophylactic use without the high toxicity associated with stronger medications. Less harsh than formalin or malachite green, suitable for sensitive species and early-stage infections.
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Gentle, Broad-Spectrum Treatment: Effective for prophylactic use without the high toxicity associated with stronger medications.
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Versatile Across Freshwater & Marine Tanks: Safe for use in a wide variety of aquarium setups.
Product Details
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Brand: Aquasonic (Australia)
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SKU: AQS21
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Product Type: Medications / Antifungal & Egg Disinfectant
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Active Ingredient: Methylene Blue
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Volume: 250 ml
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Target Environment: Breeding, Hatchery & Hospital Tanks of Freshwater and marine aquariums
- Use: Prevents fungal infections on eggs and mild fungal or protozoan infections


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