Ich-X is a safer and more effective way to treat Ich & Ich related conditions. It treats Ich, Cryptocaryonaisis, Trichodiniasis, Velvet (Gold Dust Disease), and Saprolegniasis. It uses the most widely respected formulation for the treatment of Ich, with a less toxic form of malachite green. Ich-X has been developed to offer assistance to aquarium or pond keepers who are encountering problems with Ich who have tried other treatments unsuccessfully. Safe for freshwater and marine applications.