I bought 3 of them for my 58 gallon and 3 turbo snails. The margarita snails cleaned nearly my entire tank. There was green hair algae on the rocks and red hair algae, the margarita snails ate it all off. The move really fast and home in on the algae. I definately recommend them.

They are never sitting still like the turbo snails. It seems like they are always on the move eating.