[header] How to care for an iguana [title] Provide your iguana with lots of light. [step] To thrive, iguanas need access to certain types of light. Most importantly, iguanas need ultralight light that is in the uvb spectrum. 
Without this sort of light, your iguana could suffer from a deficiency of vitamin d, be unable to absorb calcium, and have other health problems. [substeps] Purchase uvb light bulbs that are specifically labelled for reptiles.