So I have a empty 40 gallon tank (36x18x16) and it it bothering me that nothing is inside it and I've been thinking about getting a leopard gecko for a while now. Problem is that it seems too big for a tiny leopard gecko as i hear they get stressed in big spaces. So i started looking into the giants and super giants but i cant seem to find anything on what the dimensions there enclosure should be. I think the super giants may be too big for the enclosure but I'm not sure. I've also heard that a 20 gallon is fine for any size leopard gecko but that cant be right can it?I'm asking anyone with experience or information to please enlighten me. Also any suggestions on what other animals i could keep in here would be appreciated as well.