Newbie here....
I built a single sided UAS for my 120g that resides in my 38g sump and so far have seen only a fair amount of brown algae growth. I am feeding it with a 12 inch airstone using a luft pump and 2, 65 watt CFLs (130 actual watts), and screen size is 8x8 (I know a little large according to the new guidelines) and was lighting for 12 hours. My scrubber is built out of 1" PVC with the air stone slid into the bottom with a slit cut out to direct the bubbles (I'll post pics once I figure out how). I also have a T off my return pump with a ball valve to adjust my flow rate to my display with the remaining flow (about 200gph) going back into my sump just below my algae scrubber. I just increased my lighting to 18 hours.
This has got me thinking.....What if I feed my scrubber directly from my return pump or also insert a bubble wand into the PVC to add bubbles/oxygen with the return pump flow. I was thinking of drilling holes in the PVC to release feed water/bubbles (if that makes sense). Has anyone tried this approach?
Tank has been set up for about 4 months and I have hair algae growing like crazy and red slime algae....nitrates are 20 ppm and I have not yet measured my phosphates.
Open to suggestions.....