I used a rectangular PVC design to have two screens. I was a little worried about not having enough surface area. Since I'm taking out my skimmer I utilized the pump from a coralife 125 protien skimmer.I'm not sure how powerful the pump is. Hope this makes enough flow. The PVC is about 12x5 inches 1/2 inch in diameter I think. The screen was 10x14 but there is about 3 inches under water. I may later raise the PVC now it just sits on the top of my premade Berlin sump. I found an outdoor spot light spike at lowes I'm using for the light it came w a plug so no wiring plus has a rubber seal for around base of bulb, might help keep bulb a little safer from evaporation. The light bulb has been a challenge to find and what I've read people use to see what may work best. 120v 23w cfl floodlight I think close to 5000k (I'll double check) bulb seated between screens hopefully will create a on sided double screen. To clean one then the other a few days later. Today is the first day running. I did take some algae growing in tank and "seed" the screen ??? My nitrates are through the roof!!! And w frustration from numerous water changes and adjusting feeding. Algae on rocks n having to clean the glass all the time. I hope this helps solve my problems.
Will add pics soon.
Won't work from my phone??!!