Quote Originally Posted by kibakiba View Post
I personally wouldn't keep a garter at 90, unless it was sick or had a health problem. I try to keep my tanks warm side at 75, and cool at 65-70 when it's possible.
Seems like your high temp isn't high enough for proper thermo-regulating.
Your cool temp is fine but I think you should up the warm side.
The higher temp will aid in digestion and also keep the immune system more active.
Just my opinion.