Proper lighting is critical to iguana health. A fluorescent reptile bulb is necessary for strong bone growth. It
supplies the UV rays that are necessary for the iguana to produce vitamin D3, which is essential for the absorption
and utilization of calcium. The light should be above a screen cover to allow UVA and UVB ray penetration (UV rays
cannot penetrate glass or plastic). An incandescent bulb above the driftwood, should be provided for basking. Make
sure that the basking area is low enough to prevent the iguana from getting burned. 10-12 hours of daily light is
recommended.