I do not believe his tank is too big. He has lots too hide under and it is covered on the sides by material attched with velcro so I can remove it. I took the picture without this to show the tank better. His humidity stays up just fine because I keep the top covered, it stays around 58. I have digital probes so I can measure his humidity highs, lows and current in multiple areas. He has a heating pad which has a control and a thermometer attached to the bottom of the glass directly above it and i keep it around 89. His cooler side is about 82. I know what Im doing thank-you and If I had a bigger collection he would be in a plastic tub likely, but this is what I think looks great and works so I will keep it this way.