I have two 30g all glass tanks with screen tops that I use to put two of my snake on display. My house also gets cold and drafty so I also had humidity and heating issues.
The tank has a heating lamp on the left side and a 10g light fixture on the right. (I just have that on there to provide extra light). So in order to fix the problem I purchased some heating tape from the hardware store and sealed the screen top.
I cut a circular hole for the heating lamp and a rectangle for the 10g light. (Both were cut a 1/4" bigger than needed). I have the heating lamp on the left side with the water bowl almost under it, and two hides on each side of the tank. On the outside bottom right of the tank I have a large heating pad that is controlled with a timer.
Because of the temperature drops at night I have the heating pad turned on 5min before the lights go off and turned off 5 min after the lights turn on.
Now the tank has great ventilation, perfect basking temp of 90-92f, and the humidity ranges from 70-75% minus the small drop during the night hours. With these small modifications both snakes eat well, and have perfect sheds. When the serious cold weather comes I do plan on adding some foam just like mention above to provide more installation if needed.
Here are some pics taken from my iPhone hope you could see them clearly and I hope this helps.
By the way I have followed this forum for a few months, I just never posted anything. I just want to say its a great site, I learn something new everyday about morphs, do's and not to do's. I plan to formally introduce myself in a post most likely tomorrow. Thanks Jumbie.
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