I made a thread about doing a group buy on cleanup crews. The question now is what is best for algae snails or crabs. I have had both in the past, and like how snails clean the rock and the glass. The only problem with snails is they flip over and get wedged in the rock and die. The problem with crabs, is they eat the snails, but they dont clean the back glass as well. In your opinion what do you guys feel works best. Do blue leg hermits eat lots of algae?