while i was wokring at petco yesterday, i had a customer asking about his BP not eating since halloween.i gave him advice about the set up and temps and he said he'd do the changes that i asked him to do. i noticed he was buying a heat rock and i told him that they arent good for heat sources and to use a heat mat that we sell there.he said he keeps his BP in a wooden tank and an UTH wouldnt work. he then said what he could do is palce the heat rock at the very bottom and then cover it with a thick layer with the aspen bedding he's using to provide heat. would that be a good idea?