Typically I run with the astreas and the mexican turbos, mainly the turbos. I have one in my 75, big snail, about golfball size, 'Turbo' is it's name, and cleaning up the joint is his game! I do on occasion have to get my arm wet and turn it over though. It seems as though there is always a waging battle between my hermit crabs and snails though, so they are always taking one anothers shells and such.