Hi, i was wondering about housing a baby cornsnake in a 5 gal tank. I read on here that you could prolly keep em in there for about 6 months or so. The thing i am worried about is making a heat gradiant. It seems that such a small tank will be near impossible to have a range in temperature. Should i just have it set temperature of 80 degrees or what? Also i am wondering which is better for a 20 gal, a heating mat or just going for the lamp on top. Thanks.