I have one... but Ive never had an algae problem in the tank he is in. Tho I have to wonder if thats because he's in there. The tank right next to that one gets covered in algae - they both sit across the room from a window. Hes a cute little guy. Hes not out and about all the time, but hes never totally hidden either. I like him just fine but he doesn't make me drool
He's like a mini-vacuum at feeding time. And he does love his driftwood tho most of the time he uses it to sleep under/beside.