We keep the house same temp year round at 70. They have a UVB bulb in the hood light and in all respects seem very content. They're a local species and are found various places outside - temp varies from 35 (during winter) to 115 (during summer). I wasn't sure if they can develop any diseases or illness because of no 'flooring' in their enclosure. I thought it strange after looking at everyone's set ups on here and other sites.