I am looking into getting a crested gecko and my question is would a 18x18x18 be big enough for him to live his whole life in or would I be better off getting a different tank? Also I want to plant the tank any suggestions on what plants to put in it and what are some cheap uv lights that I can use I get a little light into my room from out side but I don't know if that will be enough. And what about substrate I am going to use coco fiber because I use that on my pacman and I get it in three packs should I add a bottom layer of fish tank rocks for drainage or is there something else I should do? Any other tips or suggestions I am open to I just want to make sure I am doing everything right for the little guy oh he's really small right now maybe three inches head to tail would this tank be to large for him at the moment? Ill probably have more questions latter on so anything else you can think of that would help out would be greatly appreciated.