I went outta town for a few days had my bro feed my fish, only to come home and find my corals doing great and clam... but all my fish are getting wiped out, I noticed my dead blue tang full of ich, and tried to do water changes and the only remaining survivor is the chromis.. so disappointed had my clown fish pair for 6 years and 2 moves.... worst of all my h2o quality was with in parameters which I run year around.