Hi, I am new to this site, so bare with me I just aquired my first snake, a sinaloan milk snake, on Monday. She is in a 20 gal terrarium and I am using a stick on UTH under about 1/3rd of the tank. Currently using aspen bedding(they were using bark where I got her, but they had none left so suggested aspen as the next best option). I can feel a little bit of warmth on top of the substrate, but if I stick my hand down to the glass, it starts to feel quite hot after a few seconds. I have never seen her burrow, so is this okay? I know I can buy a thermostat or rheostat to regulate the temp, but I am worried if I turn it down, it won't be warm enough ontop of the aspen. My second problem is, the air temperature reading on the warm side is the same as the cool side, so the UTH doesn't seem to be heating the air at all. Is this a problem? The temperatures are about 70F on each side, which I am sure is too low. Should I use a heat lamp(or one on each side?) to raise the air temperature for her? She doesn't seem to be seeking out any extra warmth, in fact she spends most of her time in her hide on the cool side of the terrarium. Any help is appreciated! Thanks!