I got abit a black Beard/hair aglae problem and also I can't get my no3 below 25mg/l even with a 40% water change due to my over breeding platies >_<. So i was hoping an aglae scrubber would help in the regard but i have a heavily planted tank at the same time. Or should i just keep dosing with Excel, it has helped or maybe look into getting a co2 system going?