I have had it running for 5 weeks now and was running for16 hours a day with very little to no algae growth backed it down to 11 and a half hours and all I can get to grow on the screen is a light brown algae that appears to be diatoms the aquarium is only 8 weeks old
I am running 4 30 watt LED grow floodlights on a 14 by 13 screen it is a waterfall type scrubber