I just restocked my mantis tank with 5 blue legged hermits, 5 scarlets, 2 emerald crabs and some snails, and my peacock just moved around and whooped almost everything I put in. It was alot of fun to watch, but it almost made me tired watching him batter every shell he came to. Is this common, should I only add 1 or 2 at a time? What do you guys do?