[Crusinjimbo]

I use a river type spanning the rear 2” of a 13.5G AIO. The return feeds the ATS that slopes only 3” to the exit at the other end. Made out of plastic Home Depot trim board and a 9 watt 12” strip light. I scrape about 20g of tightly squeezed “green” every 10 days from a 12” x 1 3/8” mortared screen. Been running for a year. After using various scrubbers for years I have come to believe that they all work to a degree and they can be overdone. ��