I just added my first fish into my 65g FOWLR tank. It is a SMALL Ocellaris clownfish that I added on thursday. I feed him 1/4 of a block of mysis shrimp ONCE a day. He eats a few pieces but a lot gets away. So my question is, Would it be safe to add 4 or 5 Nassarius snails into the tank at this time ?