Originally posted by Leopard_babe
You need to find out what is causing the ich, otherwise it will never go way. It could be flutuating temperatures, Changes in ph, a new creature added to the tank, or high nitrates tat are stressing your fish. I use greenex in my tank. I find that it helps the ich go away. So try to figure out what is causing the ich, so that you can fix it. Then do a water exchange. Then try the greenex and see if that works.
HTH
Leopard
Not really true, only one thing causes ich and that is the parasite itself which must be introduced into the tank and without a host will be complely wiped out by the end of a month. While changes in parameters will contribute to the decrease in the immune system of a fish, it will not cause ich in a tank where the parasite is not present. There are only two sure fire ways to kill ich, Hyposalinity and Copper, neither of these two can be used in the presences of inverts. Reef safe medecines have questionable effectiveness. Read the sticky in the Disease/Treatment forum for more info.