Description
Aquasonic Bactonex 250ml
Aquasonic Bactonex 250ml (SKU: AQS08) is an antibacterial medication designed for medium-to-large freshwater aquariums. Formulated to treat widespread or severe bacterial conditions, it addresses fin rot, red streaks on fins/body, ulceration, and bacterial eye infections. The 250ml volume ensures hobbyists have sufficient medication to complete a full course of treatment across larger tank volumes without running out mid-cycle.
Aquasonic Bactonex is a preventative antiseptic treatment designed to help protect aquarium fish from bacterial, fungal, and protozoal infections. It is suitable for use in both freshwater and marine fish-only aquariums and is especially useful during water changes, when introducing new fish, or within quarantine systems.
Important: This product is not safe for corals or invertebrates. Activated carbon must be removed from filtration systems before treatment.
Usage & Application
When to Use
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Severe/Widespread Bacterial Outbreaks: At the first signs of external infection, treat whole tanks when multiple fish display fraying fins, mouth rot, or open body lesions.
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During regular water changes, or when introducing new fish to an aquarium, in quarantine tanks.
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Post-Aggression Recovery: Dose when fish suffer severe fin damage from tankmate aggression to prevent bacterial necrosis.
How to Use
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Remove activated carbon or resin filtration media before dosing.
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Shake bottle vigorously.
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Dosage Rate: Add 5 mL per 20 L of aquarium water.
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Repeat dose every 3-5 days until symptoms resolve completely.
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Perform a 25% water change before reinstalling chemical filter media.
Additional Guidelines
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Remove activated carbon from filters before treatment
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Do not use in aquariums containing corals or invertebrates
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Ensure adequate filtration and aeration during treatment
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Maintain good aquarium hygiene to improve effectiveness
Product Specifications & Highlights
Key Features
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High-Strength Bacterial Control: Clears fin rot, body rot, cloudy eye, and bacterial skin ulcers. Its broad-spectrum disease protection helps prevent a wide range of bacterial, fungal, and protozoal conditions, including Velvet, Whitespot, Chilodonella, Trichodina, and Trichodinella.
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Promotes Healing: Stops bacterial proliferation so immune systems can rebuild damaged tissue. It is ideal for preventative use:
Can be used proactively during routine water changes or when adding new fish to help reduce the risk of disease outbreaks. -
Sufficient Capacity: 250ml bottle provides ample treatment volume for larger aquariums.
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Safe for Biological Filters: Will not destroy nitrifying bacteria when used according to directions. Effective in both freshwater aquariums and marine setups that house fish only.
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Essential for Quarantine Tanks: An important treatment for quarantine systems to safeguard new, stressed, or recovering fish.
Product Details
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Brand: Aquasonic (Australia)
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SKU: AQS08
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Product Type: Medications / Antibacterial Treatment
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Volume: 250 ml
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Target Environment: Freshwater Aquariums
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Use: Targets bacterial, fungal, and protozoal infections of Freshwater and marine fish-only aquariums


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