Before deciding to keep an iguana as a pet, keep in mind iguanas will get large. Iguanas do not only grow as large as their tank. When they get older, they will usually either need a large, custom-built cage, their own room in the house, or free roam of the house with a well-heated basking spot.
A good size tank to start out with for a baby iguana is a standard 20 to 55 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 1 1/2 times the length of the iquana in length, 2/3 the length of the iguana in width, and the length of the iguana in height. Higher is better, iguanas love to climb and be up high.
There are several things that can be used for substrate. ReptiBark and reptile carpet are good choices, however, bark attract mites and other insects, so it is important to change it often. 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. We do not recommend heat rocks. They are not a natural way for the iguana to absorb heat and they can cause serious burns.
It is important that iguanas are kept warm enough to digest their food properly, and to fight off disease. A thermometer should be used to keep track of the temperature. A basking light should be provided that reaches between 95-100° F (Be sure that the iguana cannot burn himself by laying against the heat lamp. The air inside the tank should be around 85° F during the day and around 70-74° F at night. If your home does not stay at this temperature at night then a ceramic lights, nocturnal light, or undertank heater will work well to keep this temperature. They provide heat without the light.
Try to provide your iguana with as much natural sunlight as possible. There is no replacement for the benefits that your iguana can receive from natural sunlight. Remember to always provide your iguana with some shade to get out of the sun if they wish, and to never bring them outdoors in an aquarium as the heat inside the tank will quickly rise to dangerous levels.
Iguanas are herbivores, which means, they are plant eaters. Mainly feed your iguana green vegetables, such as, Green and Red leaf lettuce, Collard greens, Mustard greens, Dandelion greens, etc. Commercial iguana foods should also be provided along with mixed vegetables, squash, zucchini, sweet potatoes, raspberries, blackberries, bananas, and other fruits and vegetables can also be added, but about 85-90% of their diet should be greens. Spinach should not be fed at all to an iguana, because it binds calcium.
Water & Humidity
Provide your iguana with a bowl of water tank for humidity and soaking. Iguanas get most of their moisture from the air, so daily a misting will help keep the humidity to a proper level. The humidity level should be between 90 - 100%. Humidity gauges are available to be sure you maintain this level.
Iguanas are pretty hardy and not really prone to getting diseases if taken care of properly and fed the proper diet. You should visually check your lizard frequently for signs of illness.
□ Screen Top
□ Water Dish
□ Heat Lamp
□ Humidity Gauge
□ Branches and other decorations for climing
□ Reptile litter or other substrat