Do you have a UVB bulb in there? No, keep your bulb on top because chameleons have the sun suing down on them in the wild, so it would be weird for them to get light from the side. As long as you spray him 3 times or more a day, he should be fine. Make sure your humidity is 50% - 80% and temperatures are 85 - 88 degrees F. Mister should be on the side close to top middle.