So I've been toying around with idea of getting this heating pad:
http://www.petsmart.com/product/index.j ... Id=2752461
and setting it up to only run at night under the sand of my basking area, since my 18 yr old RES always sleeps in the water at night, probably because the basking area is too cold. Obviously she's fine with this since she's been doing it for 18 years, but would keeping the basking area warm at night be a good idea?
Has anyone experimented with something like this? Any good reasons to not try it?

