Ive had two. One died in my tank and didnt nuke it. I pretty much just let them do their thing. As for powerheads I dont do anything special. These guys try to climb the glass but always fall off, they really can only climb rocks from what Ive seen. Not like snails or stars that can hold on, they may get to the top but then just kinda fall off, its quite funny actually cause they just roll back over and go about their business. I do handle mine every now and again to get him used to me and not shoot toxins if I had to handle him for some reason. Pretty awesome critter. Wouldnt honestly have a tank without one in my clean up crew! I say get it, you will be amazed and how good they are with making the tank look clean!