I am slowly switching my clean up crew. I'm getting rid of hermits (keep killing snail, even with extra shells in the tank) by feeding them to the mantis. I am also getting rid of turbo Snails, they keep knocking corals off rocks. Asterina Snails are OK but I'm tired of flipping them back over. Trochus Snails and Margarita Snails is what will be the bulk of my clean up crew soon. I also like my Serpent star and nesserus Snails. I'm over the urchin too, he and the giant brittle star are going to the lfs on sat