BNT’s ICH OUT is a combination of two powerful medications which have proven effective in the control of many diseases of freshwater fishes caused by external protozoan (single cell) parasites such as white spot disease, Ichthyophthiriasis, Costia, Trichodina, Chilodonella and saltwater external parasites such as Cryptocaryon and Amyloodinium . The medication can also treat fungal infections in fishes. Ich Out is recommended as the best chemical treatment for Ich, (white spot disease), having been originally developed decades ago for professional aquaculture, public aquariums, and government use in treating fishes. Other than refinement in ingredients, it has continued to remain as the foremost scientifically developed chemical treatment for Ich white spot disease. The Ich Out formula utilises the less common but also less toxic chloride salt binds strongly with the internal cytoplasmic structure of disease causing organisms interfering in normal metabolism. Fishes such as the so-called "scale-less" species (loaches, catfish, etc.) tolerate ICH OUT very well, but be sure to follow cautions noted earlier.