I have posted pics of my horizontal scrubber on here, and pretty much got the thumbs up from SM, and everybody else on the design, lighting, flow, etc. I still have not been able to completely eliminate the algae in the main tank. There definately has been a reduction, but there are still a lot of spots that are growing pretty well. Also, I have noticed some spots of a dark slime algae now appearing on some of the rocks. Scrubber has now been in place for about 3 months.