Oh, I'd also check out the screen tops that Scott and I have built for our tanks. I'll have to track down that post for you.
I'm back, here is the link to Scott's. I used a black frame and it is almost invisible on the tank. I got my frame kit from Lowe's. I had to get a few extra corner pieces separately because my frame has 6 sides to allow for the flow returns.
The Bluespot Club