Hi there, when I first read about algae scrubber I was fascinated and decided to get one. So I did some reading and ended up buying parts of Santa Monica and built a LED light myself. I got some decent growth but I started to go nuts from that bubbling noise, which is not even close to a mellow ripple. So I decided to get or build an ATS. Thanks to the many information provided here, I designed my DIY scrubber which takes up few space. The principle I used is to illuminate one side through the glas of the sump and the other one from a light positioned within a water proof box hanging in my sump. The screen size is 6" x 8" and is lit by 16 660nm and 4 450nm, each of the 3W running at 25% of max current. I started today with 10h lightening period slit in half with 2h pause between. Acrylic box to hang in the sump with LED light Hang on ATS Hanging on my sump The setup Start-up. Any suggestions? Would you hang the screen into the water or on a piece plastic with a slope into the water? Thanks for reading, hope the scrubber will work.