Thanks for the reply, ok so sounds like Im gonna need a rheostat or thermostat. Basically I have a heat pad under the glass and then i put 4 layers of paper towel over the area of the heat pad and about 3 over cooler side so the glass doesnt get too hot. I also have a lamp shining down over the warm side but its hard to keep the temp stable. When it gets to like 94f i turn the lamp away but then it cools down so i have to turn the lamp back on. Should the heat pad be enough on its own without a lamp?

Appreciate the help.