So this is my second scrubber which will be installed tomorrow. I am replacing my old ATS/sump with this new and improved model after learning the do's and don'ts from version 1.
55G tank. 1st chamber 18" long, 1-1/2" overflow pipe feeds the ATS, screen is 12"x10.5". Chamber is painted black all the way around and bottom, and top will have a lid. This is to keep all light contained in the chamber and not grow algae all over the rest of my equipment. 1-1/2" pipe reduces down to a 3/4" with a valve as a safety overflow. I hope the lip that the reducer creates will be enough to give sufficient flow over the screen and allow my to keep the valve open for safety. LEDs are 6 LEDs per side, 50/50 mix of Cree Neutral and Warm whites using a meanwell 750mA constant current driver. 3 LEDs mounted per 10" of C channel aluminum inside a glass box with a lid over the box that will have 2 1.5" fans to keep air circulating in the box. Crossing my fingers this all works as planned.