i tried to catch the fish earlier, and gave up for now. i have 2 cleaner shrimp and 1 blood red cleaner shrimp in the tank also. they've been there all along, so they are not likely to solve the problem either i suppose. somehow i need to catch them (atlantic blue tang and blue hippo) and get them back into QT and either get some parasite stop or maybe try the hyposalinity i suppose. the only problem with hyposalinity would be that i'd have to get my snails and cleaner shrimp out of the QT before trying that method. any word on effectiveness of parasite stop on treating ich?