I really appreciate all your thoughts. Maybe I can give a little more information to steer all your opinions in a narrow path. I am using 2 Radion Ecco-Tech Marrine LED lights. The reason why I say this is because these lights are about 750 each. The High Output UV I believe is over 500 dollars. This UV is large like a torpedo. It will lay down on the bottom of the stand. Putting it anywhere else is out of the Question. This is why I thought of a overflow box. The only pump I would consider using would be a Eheim pump or the Ecco Tech Marine Vortex pump. Why the Vortex pump? Not because it is very expensive, but because you can control the flow electronically with out a valve. Again Thank You for all your ideas.I would appreciate more with this added information.