Im new to reefing my tank is about 6 months old and i have already lost over $200 in fish. The first clown sadly committed suicide and some how made it between the glass and my screen lid to find him on top of the screen. That one i get but just recently i had a second clown just disappear along with a yellow watchman gobi. The gobi has been about a month that its been gone and the clown is about 4 or 5 days. My wife came down and both clowns were happy and healthy then an hour or so later one is just gone. Its not in the rocks or the back of the tank on the stand or in the stand it just dissapeared any ideas