I don't know about selling the hot rock .... we had about a dozen of them at our humane society's fundraising rummage sale this summer. I think we sold them for a about $5 each?

He needs to have two different overhead lights - one for UV rays and one for heat. How large is the iguana? If it is fairly small, a 100 watt bulb will probably do for heat. Make sure it is in one end of the cage, so the iguana can get out of the heat when it gets warm enough. This heat is crucial for digestion and metabolism. It also needs a UV (full spectrum) light. These lights simulate the natural sunlight, which is important for Vitamin D synthesis, but they don't add much heat. That's why both lights are important.

Iguanas, like turtles, will naturally eliminate in water, if they are given the opportunity. Of course, if no water is available, they will have to go to the bathroom out of the water, but that can lead to constipation (which can be fatal if it is severe enough). I filled a cat litter box with water, and that was my iguana's "toilet". He NEVER went to the bathroom anywhere else. Iguanas also like to soak and swim. Some tame ones like to take showers! Your cousin's iguana should have a container of water big enough to get its entire body into.

Dry iguana pellets are ok, if the iguana eats them. Most iguanas hate them, and eat only enough to survive. They are totally unnatural food for a grazer. Iguanas graze all day long, just like a cow. Green leafy vegetables are as close to natural food as you can get for them. They should NEVER be fed iceberg lettuce, it has NO nutrients, and they will starve to death eating it. They should eat kale, spinach greens, parsley, etc. If your cousin insists that he doesn't have time for fresh vegetables (which, in my opinion, means he shouldn't own an iguana!), tell him to buy a jumbo sized bag of frozen, mixed vegetables, with no salt added. Keep the bag in the freezer, and scoop out some everyday and put it in the dish with the pellets. He can also buy a big can of fruit cocktail, in water, not heavy syrup. That won't take up much time, and it's certainly better than just pellets. Not as good as fresh greens, but better than pellets.

He REALLY needs to add a calcium supplement, in the correct ratios. Do you want me to see if I can find some links on the internet about iguana care you can print out for him?