So I think what I would do is, say I bought a Big heating pad thingy. Then I would put the probe under the bottom of the tank then put the sticky side up so the probe is stuck to the tank and is touching the heat so it can read the temp.
I'm just so confused about the heating pads and where to put them. I'm SOOOO scared about the winter here because it gets cold and I think it gets cold in the house. So I have no clue what to do about winter time. :'(