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I built my first algae scrubber 10 days ago. I have a 110g display tank with a 40g sump/refugium. The tank has been up and running for a year and a half now. My nitrates have always been around 20ppm. I think this is because of our snowflake eel as he produces a lot of waste. I thought I would try the ats and see how it goes. When I first put the scrubber in the nitrates were between 20-25ppm. After my first cleaning which I did at 7 days, the nitrates were at 10ppm. The screen at 7 days was a light brown color with some hints of green, I was running the lights for 18 hours a day. Now at 10 days the screen is very dark, almost black looking, the lights are being ran at 12 hours a day. I will be cleaning the screen today to remove the black algae, I will also be roughing up the screen a bit more. As of right now I have two lights, one cfl on each side. The bulbs are equal to 60 watts each. Is this enough for my screen? Im currently running the lights for 12 hours a day. The screen size is 6" x 8". The pictures show a larger screen, but that is when I still had to much hanging in the water. I was reading that the screen needs 1 actual watt per gallon. I found a few bulbs at home depot that are 42w (equal to 150w) and 2700k color temp. Is this to much light? I would like to run the lights between 8-12 hours a day, rather than 18 hours. Any help or suggestions would be great. Thanks!

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