I had Ball Pythons do fine if the temperature gets a little lower than 80, but not below 70. They will be fine if the the temperatures don't get below 72. If you have a larger plastic container, put the smaller container in it. Usually the temperature inside the first tub will be a few degrees higher than the room and long as the heat pads work well. Or just get some more identical heat pads to use on your tank on a different dimmer switch.