I got the 10.0 T5 bulb. My tank has the fine mesh screen. I placed the hood on top of the screen next to the heating lamp so I'll see how he does with this set up.Depending on the screen it has 2 options - is the screen a fine mesh like a screen door or a wide hole type--- fine mesh it needs to go inside the tank directly above basking decor 12-15 inches--- a wide hole type it can sit on top w/ basking decor 8-10 inches directly below -- did you get the 10.0 T 5 bulb as well - the hood should of come w/ a 5.0 bulb - it can be used but it must go inside the tank - its more equivalent to a T 8 which is more for aquariums -- distance of 6-8 inches directly above basking decor --- your screen will block out 30% of the rays --- also the 5.0 needs to changed out in 6 months the 10.0 T 5 approx one year
Thanks again for all the helpful advice!