If you have a raccoon in your tank,you will not be able to put anything in there that even resembles a coral...Mine even picked picked every new piece of live rock I added totally clean of everything except coraline algae.Tell you the truth,,,I'm glad he is no longer in my tank.They are a beutifull fish,,,But kindof a pain..They are also very pickey eaters.Mine would eat nothing but brine shrimp....