http://ball-pythons.net/forums/showt...09-Lizard-FAQs

11. What size housing does a mature iguana need?



A young iguana will outgrow a 55gal tank within its first year! The length enclosure should be at least twice the length of the iguana, and the width should equal at least half the length of the iguana. It should also be tall. At least 6’ tall. They are an arboreal species and are most comfortable up high.