So I'm going to be getting a leopard gecko soon, and I'll have 3 hides for him: hot hide, cool, and moist. First question is, should all the hides look the same so he doesn't like one more than the others or can I have 3 different looking hides. I know snakes can be like that. Second question, is a 20g long big enough for 1 adult male. Do I need to worry about ambient temperatures at all. And is it true that males get bigger than females. Thanks, other than that I know everything else I need to know.