Living in a house built in the 1940s is a bit tricky in the winter and I'm trying several different methods to keep my tiger-legged frog from getting too cool or too hot. A 15, 25, 40 watt bulbs have been tried for heat, a small Zoomed heat pad under and then on the side of the tank, and I have finally resorted to lighting the small gas wall heater in the kitchen and the bathroom. I manage to keep the frog at 75 to 78 degrees and a little cooler at night. My tortoises have to cope with less than South America heat in the new shed. So it's clear that the grandkiddies will be getting very little this Christmas while I buy better equipment for my hobby. Santa needs to bring me a digital thermometer/hydrometer, a better tank heater, and industrial shop heater for shed.