Rack system.. Unsure of the size of tubs but they are pretty big so they have hides on both sides. Hotspots set at 91 (heat tape reading) so it keeps ambient temperature in the tub between 78-85. Also am using reptibark bedding. He is just nervous so i make sure he feels comfertable. If I get him out after about 3 min of him being in a ball he realizes i'm a good guy and will start to explore.