I dont think they require a heat lamp I went to many sites and they all recommened Under Tank Heaters(UTH) and 70% humidity, I just keep that high with a spray bottle, Anyway at my petsmart the hermit crabs are treated terrible, they do the opposite you are supposed to they have a red hot heat lamp I beleive the ones made for uromastyx (sp?) and hard shalllow wood chip so no molting could be done and a tiny bowl for like 15-20 hermits in there and I even saw one dead in there!