CasqueAbove
Chameleon Enthusiast
What do you mean by large lamp? The only lights recommended are the T5HO fixtures. 2in1 bulbs that are heat and UVB are far too strong for use without a solarmeter to check your levels. It may not mean raising it up but it will mean dropping the closest point he can get to and pulling the shelf out. Unfortunately your cage is not something we typically use indoors. So while the information is not directly at hand it does not mean I can not get it for you.
With yesterday being Mother's Day people were busy. Hopefully @Gingero will be able to test it today to get a distance for you.
I am going to agree with @Beman here. MV 2 in 1 are great, like a high powered car. If you don't really know what you are doing some one can get hurt.
The issues I see with MV and screen is that it does not allow a proper choice, it is too much for a 2x2 area. They are great when you have a large enough surface area that half can be lit where the other side is not. This allows for a very natural set up. It also requires a large set up. like 36 x 30 surface area, and that would be the smallest, which is 75w. Most screen cages are using 65w or under for heat.