Hi guys... I'm wondering why garters have to be kept at certain temps. I live in Washington State and we have garters here out in the wild, which are exposed to (depending on the time of year) anywhere from slightly below freezing to the upper 90's (granted, 90's are rare for our state). I have heated tanks for my garters (~70 on the cool side & ~80 on the warm side), but am wondering how necessary it is.