So my fish have ich and i have got cuprazin which says it uses copper sulfate, from what it says the min therapeutic level is 1.5ppm but i have a tomini tang which can be more sensitive. It also says for more sensitive fish use a level of 0.2-0.5 i am going for 0.5 as when i searched it up it said not even 0.5ppm would effectively treat ich. Will this concentration be effective or should i increase the copper level?
