I suggest you get your temps and humidity in line before you subject an animal to less than ideal conditions. With a plastic tub you can use a store bought UTH (sold under a couple different brands including Zoomed and Cobra) or a human heating pad with no automatic shutoff feature. Either way you need a rheostat or thermostat to control the temps or you risk thermal burns on your snake. You also need a good quality thermometer to make sure you are getting 82-84 on the cooler side and 92-94 on the hot spot. Hope this helps!