how do those of you that use anything other that newspaper/paper towels in your tub keep it at proper temps. ie. cypress mulch, aspen, coconut shavings, etc.... I ask because yet a gain I tried to put cypress mulch in my tub but yet again failed to get the temps above 80( and no I wasn't experimenting with the snake in there. I put her in the extra tub) But I have tried and tried and tried and can never get the temps above 80ish. Do you use a plug in heater or what??? Oh I dont have a central heating system, just one that is on the wall in the front room so it kinda only works in there. So how do those of you with substrate in your racks keep it at proper temp levels?????? PLEASE HELP!!!