I need to know the best overall snails and crabs to get for a clean up crew. The snails I've got, blue in color, so I assume blue legged hermit crabs, eat all my small snails and take their shells. So I tried large Mexican Turbos. Those guys flip over too much and commit suicide if you dont catch 'em on time. I need a decent sized snail that does not commit suicide too frequently and will do a good job of cleaning algea. Also need a good hermit crab or some sort of crab that will clean up algae and get inside of the rock without killing everything. Suggestions appreciated. Thanks!!