Quote Originally Posted by Shadow
90-80-75-77.
That is not bad for a 20 long. For winter time 77 is not too low. Just don't go above 94 on the hot side glass.

The humidity needs to be above 45%. If it hovers around 49% that is ok except when your snake is shedding. I used to panic when my humidity went below 50%, but I was reasured by the group that at 49% it was ok. Over 70% is just as bad as below 40%. It is nice to keep it in the 50s.

Also when you know that you are going to open up the cage just make sure to spray some water on the sides of the tank. I would not spray on the substrate as that could get moldy.

Good luck.