I use this on all new fish and sometimes sick fish. Recommended brand by Aquarium Co-Op fish store (also on youtube).
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I had a very bad Bacterial infection in my tank. I tried a coupl÷ of other things to help my fish it didn't work. I lost !but 3/4 of my fish. I finally got Maracyn and Maracyn two and used them both and this saved the remaining fish. I will always have this on hand.
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Love this gentle,but effective,medicinal treatment for bacterial diseases in fish. Have used it successfully for many years,a superior product.
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Always keep it in my fish med cupboard. In my experience Maracyn cures everything it says it does and mixes safely with API General Cure and Aquarium Solutions Ich -x for an effective quarantine trio.
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Used this for Columnaris in one of my Ryukins. Suppression of the infection was evident from Day 3 of the 5 day course but not resolved by Day 5. Added salt and continued through Day 8, and the infection resolved.
Verified purchase: Yes | Condition: New
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