So I've got a 3 year old bp and we've just moved him to a larger tank, only one hide for now but he keeps moving the aspen around so he's directly on the glass above the uth which is annoying because with the aspen there it's the perfect temp but without it the glass reads 90 degrees sometimes.. Should I pack down more aspen? Someone said too much would take a lot of heat away and I don't want to turn up the thermostat anymore....