IF you have ich in the main I would NOT consider dosing any type of medicine or treatment. The best option is to initiate a hypo tx in a QT tank and let the main go fishless for 6-8 weeks. If you opt to "ride it out" then I suggest you raise your temp to around 82-83 and SLOWLY drop your SG
in the main to around 1.017. This will help speed up the life-cycle of the parasite. Ensure a high quality diet with suppliments of HUFA's and amino acids as well as garlic to keep the fish healthy. Treatment for ich can be a double-edged sword...the parasite tends to make itself known during times of stress for the fish, yet most treatment options also cause stress on the fish. Just take it slow and know there is no quick fix for this.