Since my scrubber is running powerfull lights, and it's hard to give it enought flow I was thinking of reconstructing my scrubber to have a acryllic box where the screen can be fully submerged almost to the top?
Inside volume, 85cm wide x 3cm deep x 30cm high. Screen in middle, lit on both sides with the current config I have. Overflow protect at 4/5th of the height and still driving the water through like normal. I'll make a rough sketchup shortly. This design would control water inside the acryllic by valves at the bottom thus giving total control of how much water is covering the algae.
Ideas?