Hello, I’ve been running a 75 gallon for about 3 months and have a few fish and goby’s as well as a decent clean up crew. I also have a few beginner corals like GSP, Zoa’s and Xenia’s. About 4 days ago I noticed ich on my flame angel, and researched some treatments and cures. I learned about copper being the sure fire way to kill the parasites but it will also kill coral. Later I read somewhere that if the infected fish keeps eating it will live through the cycle. My flame angel was well fed and supplemented with peas and a little garlic. About an hour ago I noticed my sailfin tang is also infected and not doing well, floating on the bottom, on its side. I tried to feed it but no luck. It was even so weak it got stuck to a filter intake but I quickly saved it. I have to take some action before all my fish get ich. I don’t have a quarantine tank and there is a lot of stacked rock in my tank so catching the fish would be a pain. However, I have a lot less coral frags that I could take out, but I only have my two Fluval hang on filters and can’t spare them as they are essential. Could I take my corals out and put them in a storage bin with some tank water and an LED and power head while I treat my tank with copper? Thanks