I got 3 from Jayson at Ellis Aquatics...they really tore into the GHA I had for about 3 weeks, then just started disappearing. Considering everything going on with the tank not certain I didn't just kill it.. I'm setting up a small tank at the office and I'm going to throw one in there.. they really outdid what the snails did in terms of keeping the tank clean and frankly they liook uber cool.