Coppersafe is a medium strong ich parasite med. If you are careful to follow the directions, it should be ok. If you have ich you don't have much choice but to medicate. I have used Coppersafe and other Maracyn products. They are easier to use than other lines, but not always as effective as some of the more aggressive products in other lines. The line that includes Clout is my first choice, when I am sure I have an ich outbreak.