Thought it was about time we did some comparisons of biomass per surface area of screen. Maybe some of the myths can be dispelled and get the most efficient usage data for scrubbers. I'll kick it off; (I know you need to do dry mass for it to be accurate, but wet mass will suffice for now)
Two sided waterfall, 200sq inch (100 each side), aerated, single side cleanings, 50watt LED growlight on one side, 40watts of 6 month old cfl's on the cleaned side, flow approx 2500lts hr over 13 inch width.
Harvest average 400grammes, 9 days
So 400g/200sq inch/9days = 0.2222 g per sq inch per day.