Hi, I had a case of ich in my tank on my regal tang which went to my clowns as well, I only have 2clowns and 2 yellow wrasse and 1 tang and 1 fire fish. I have put all my fish in a Qt but unfortunately I lost the tang and fire fish. The rest have been in the treatment now for nearly 2weeks and look good with no spots but I’m not sure how long to leave them in there. My yellow wrasse aren’t very happy as they have no sand to bury into. Can some one please advice me on how long to treat my fish before I can put them back in main tank.