Yes the UTH is on a thermostat, it is set at 88. I got some moss and did as suggested and it raises it for a bit then drops drastically. I keep a warm moist towel over half the screen. I have increased the size of his water dish. I have misted, but I feel that I am misting to much. I live in a cooler climate with very low humidity. Would adding a humidifier to my room help increase the humidity in his tank. He is in shed as we speak and I have started stressing myself out over this humidity issue.