Kai, I have a pair housed in a 36 x 18 x 18 (approximately) screen cage. It's excessive I know, but I never changed their setup as I got them with it. I figured they were doing good in it so I didn't want to change it up. They do not need anywhere near as much room though. When they are outside just make sure they have shade to go into and make sure you do not get them too hot. Mine always sleep at night and aren't active at all past dusk. But they don't move all that much during the day either. They will reposition themselves and walk to a different basking spot, or go eat some fruit died, but they won't walk around continuously or nervously.