I recently got my first ball python, and after reading many of the posts on here and information on other sites it seems that plastic tubs are the way to go for housing. Unfortunately at this time I have over 150.00 invested into a glass tank set up, so I'm hoping I can make it work. As far as heating goes I thought I had it under control and then read about tank floor vs ambient air temp readings and switched the set up focusing on tank floor temps. Is one more important than the other or are they equally important? I have a 40 gallon (36 X 18 X 16) tank with a 30-40 gal uth and an assortment of heat lamps. Currently I'm using a 100 w white light and 100 watt black light during the day and the 100 watt black light during the night. I tried a 150 watt light in the center of the tank but the floor temps were too hot where the uth is. Right now I think I have a pretty good gradient as far as the floor temps go but air temps may still be too cool. The much bigger problem though (at least in my mind) is the humidity. I can't seem to get it above 30 for more than maybe 30 minutes. I put a water dish directly over the uth and added some sphagmum moss under one of the hides which sits partially over the uth, but still no luck. Any suggestions would be appreciated.