Thanks guys. I bought them at BA's over a year ago as a pair, put them in the tank at the same time and they've been together ever since.
The pistol does a great job of keeping the underside of the rocks clean. He also collects rubble from around the tank to use in his reno's, so the sandbed is free of unsightly rocks. The only down side to having one is that they will make food out of things like chromis and other dumb fish.
