right now i have 12 nassarius snails, 10 cerith snails, 10 nerite snails, 4 turbo snails, 4 blue leg hermits, 2 scarlet reef hermits, and 1 dwarf zebra hermit if this helps. also Marinne13 i have the same thing going on in my tank as do with the brown algae clean it off my rocks and 10 minutes its back again. just wondering how you are making out with that. and as far as the red sea star and sand sifting star how much sand do you need for them. i have about 1 1/2" of sand in my tank. thanks for the input everyone