I have a newbie question and a more advanced question. And maybe a few in between.

I have never had to set up lighting for a lizard before, but I do know the basics. I know about UVA and UVB and why they are important and what they do. I know there are heat lamps and light lamps and all different colors and styles. But I'm having a slightly unusual problem.

The lizard that I am purchasing is relatively new to captivity, so people cannot agree on whether they are nocturnal or diurnal. Because of this, they cannot decide whether the lizards should have access to UVB light or not. So, I went to my university and looked in the scientific journals. I was able to find an article that explained how, when kept without a UVB light, the lizards did ok for a while and then became ill. The researchers installed a UVB light and the lizards became well again. Personally, I put more faith in scholarly journals than internet care sheets, so I bought a UVB bulb just in case. I have a clamp lamp for it, but how do I set it up on a screen top? Can I just set the bulb on the screen or will it melt it? (That was the newbie question)

There is also a debate regarding heat. The lizards are native to Indonesia and New Guinea in the mountainous areas. The temperatures there are usually in the mid 70's. Because of this, people cannot decide whether to provide a heat lamp or not. I have read that when exposed to hotter temperatures, the lizards become lethargic, and seem to have difficulty breathing. Because of this, I have opted not to provide a heating lamp. Is this a wise decision? It has been suggested to just use belly heat, but these lizards also love the water, so half of the tank will be water. The other half will be an unusually thick layer of substrate for digging purposes. Therefore, I seriously doubt that belly heat will make any significant difference. What should I do? (That was the slightly more advanced question. )

In regards to the position of the tank, I had considered putting it near a window, thus providing him with indirect UVB light. Unfortunately, in order to do that I have to either keep it in my living room (which my roommates will hate) or on a flimsy bookcase in my bedroom.

I dunno, this whole lighting situation has me royally confused, and the fact that this lizard is relatively unknown isn't making things any easier. The lizard is a Red-eyed Crocodile Skink.