Out of all that I've read, I have one question. Does the temp have to be 84-86 deg. in order for the salt treatment to work? My tank is 80-82deg. The cysts have fallen off the fish. Can I add the salt and it still kill the ich??I so, should I so the treatment for a longer period of time?? Well, that's more than one question but, I couldn't help it. Thanks all.