Excessively dirty living conditions are a great place for bacteria to multiply and disease to spread. Housing A good size tank to start out with for a baby iguana is a standard 30 to 50 gallon tank. As your iguana grows, it will probably be necessary to build or have built a custom cage. The standard for deciding on cage size is one and one half times the length of the lizard in length, two thirds the length of the lizard in width, and the length of the lizard in height. We have found higher is better.
Iguanas love to climb and love to be up high.
There are several things that can be used for cage bottom cover. Bark or wood chips can tend to attract mites and other insects, so keep this in mind. Cedar chips can be toxic, so avoid using these. Branches set up for climbing are a necessity. The branches should be chosen according to the size of your lizard, and easy for your them to climb and lay on.