When you get the thermometer (and an Accurite or any other digital w/ probes is a good choice because they are most accurate) and have a chance to actually measure temps and you find that the cool side is too cool - then I guess you can add a second heating pad (or just raise your room temps). While they can tolerate temps down to 70 I've heard htey may not eat at those temps. Anerys are nice looking corns.