I have a 100g reef set up, I built a ATS from the help of this site. Its 10" across and 13" down being fed off my return with a strong flow(full wall of water at the bottom) just increased the flow from a slower waterfall effect. Have a 75watt flood light in a standard reflector pointed directly at it only on 1 side. Space and outlets dont permit 2 sided. Should I keep this size if feeding about 4 cubes daily? The first week I got the dark dark green brown black algae. Rinsed in fresh water and now at end of 2nd week alot brighter green but still darkish. This OK? But I have noticed more turf algae growing in display but my nitrates are almost half of what they were(25-30ppm) to now about 10-15ppm and phosphates about 0. Is the light bright enough and if flow is too strong will spore go back into tank and cause more growth? Sorry this all over the place but never have posted in my over 15 years in the fish hobby. Love the idea and how much my nitrates have dropped just a bit confused if I am doing this right. ALSo sorry if this in the wrong place. Didnt see general question forum? Thanks M