Okay so i am getting my tank set up for my first BP and have been following the insructions on the forum caresheet , i have a 40 gallon terrarium, 2 digital thermometers, a humidity gage, and 2 heat pads, but im not sure about the size of the heat pads, i got the heat pads made for a 10-20 gallon size seeing as im only heating one part of the tank and possibly the other if necessary, i figured a larger pad would be to much but would like to know for sure. I will not get my snake until i have every thing correct in the terrarium first.