Has anyone had any experience with them? I went to fishtown looking to purchase a clean up crew for my tank but asside from some peppermint crabs, nass snails and tiny turbo snails, this was all they had. So i bought them and they seem to be doing a good job of eating my algae but i was wondering if anyone has had any other experience with them. Also, the guy told me that i had to have some empty shells lying around for them so that when they get big, they can change the shells. Anyone have any good ideas on where to get these shells? fishtown didn't have any.



