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Bio-Tet is a broad spectrum antibiotic for treatment of infectious diseases in marine and freshwater aquaria, particularly effective against bacteria sensitive to Tetracycline.

Also proves an effective treatment for Red Slime algae (caused by Cyno-bacteria).


Bio-Tet may cause the water to become stained a red colour, this indicates the treatment is working. Colouration of the water fades after around 1 week.


Can be used in marine reef and fish aquaria as well as planted freshwater aquaria.


Dose Rate: 1 tablet per 20 litres of aquarium water. Prolonged use may adversely effect beneficial bacteria in biological filters.

Aquasonic BIO-TET 25 TAB

  • We will happily refund or return faulty items. However, we only offer store credit for change of mind.

  • Flat rate shipping of $9.95 applicable.
    Please allow 3-5 days for delivery in Victoria and 5-8 days throughout the rest of Australia.

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