So I am new to the hobby this is both my first fish tank I have ever had as well as my first encounter with dealing with parasites for my pets. I have a mixed reef 20 gallon tank I started with 2 clownfish and they were doing fine recently I added a Royal Gramma to my tank and within like 3 days of adding him I noticed he had spots. He began flashing on the sand bed and his coloration became powdery and his scales were dull and unhealthy. On different saltwater groups people told me I need to quarantine my fish to make sure this never comes into my tank. But what I don't understand about people who regard quarantine tanks as the complete eradication of ich that ich can also be on Invertebrates and Coral Frags. And these cant be treated with copper as I have been told so they will die if they are treated with copper. So realistically the only way to make it impossible for my tank to not have a ich outbreak is to let my invertebrates sit in a tank for 78 days as well as coral frags sit in a fishless tank for 78 days as well and then treat my fish with copper for 30 days? Is this even feasible? Do people actually do this seems dang near impossible and not practical. My clownfish I have in my tank seem to be doing fine but now im scared to add more fish in my tank because I know ich will always be in the tank until I let it go fishless. What do you suggest I do? I bought a 10 gallon tank for QT but whats the point of QT fish if I can still introduce ich in my tank with a coral frag and invert. If I add more fish to my tank will they have the same fate as my gramma? What do u suggest I do?

