So 2 days ago I go and get a yellow watchman goby. He does well enough and I come home tonight and hes dead. A snail was making a snack of him. Now just 2 weeks ago I had a sixline that I bought die in about 2 days as well. In my 29 gallon tank i have zoas, shrooms, xenia, and a hammer coral with 2 clowns and a algae blenny. I would think if I could keep corals I should be able to carry "easy" type fish. Water checks out well too with no problems. I got a bak pak skimming and a ac500 fuge. What the hell could be going on?