I'm getting my vivarium all set up and trying to get all the temp/humidity settings right. So far I'm battling a fluctuating heat problem. At the top of the enclosure its reading out at 90+ degrees. while at the bottom of the enclosure its as low as 75 degrees. The enclosure is completely sealed except for the side vents mounted down low. So im asking if the RETF's that i have planned on going in this habitat will seek out favorite temperature/humidity settings. Or do they just try to get up as high as they can all the time? Beings the temp's are so high at the top of the cage i don't want them to be uncomfortable and die because they are trying to just enjoy climbing. Sorry for a silly question. Just wanna make sure this home is set up all nice and comfy for them when i decide to make the purchase.