There are some basic things you need to know to take care of an iguana. Prices of Iguanas and other lizards. Heat rocks or under cage heating pads are good sources of heat. It is important to check the temperature regularly. Black heat lamps are the best source of heating.
Some people use regular heat lamps.
Iguanas need darkness at night to sleep. Their system will go haywire if they have constant light. In the summertime, they can get sunlight by putting their cage by an open window so the glass doesn't filter the ultraviolet rays. If you let the iguana out of the cage to soak in they rays, be sure you have a heavy duty screen on the window. During the winter months, you will need a spotlight and full spectrum light.