I'll get a shot of the flow as soon as I get home.
The bottom 4 inches or so of the screen is in the water. The remaining 10-12 inches stays above the water. The algae line is right in the middle, about 6 inches from the top. Note, I am getting algae growth on the top half, its just "very" slow. The bottom half you see came in over the last 4-5 days. The top half has about 1/10 the amount, thinly growing.
The lights: I want to say they're about 4 inches from the top of the pipe. Maybe 6. I clamped them on 6 inch tall clamps and pointed them down. The lights are 23 Watt, 5100K compact fluorescents "full-spectrum", 1 on each side of the screen.[attachment=0:31hwj9el]IMG_0191.jpg[/attachment:31hwj9el]
Could flowrate cause this kind of problem? I have a 300gph overflow box, but I'm sure it's not flowing that fast. If I had to guess I'd put it at 200 gph (I know, I know, I have to time it tonight). My screen is about 8 inches wide, so I need 280 gph. :?: