I can't beat the algae no matter how hard i try. I just about have given up hope of beating it. I HATE it!!!! I have had this tank for at least 8-10 months now and still cant figure out why. The algae is literally flourishing, it is growing fast and by the day if not by the hour. I am always. My signature has all my specs for my 20 gallon for the most part. My water parameters are 6.2 ph, ammonia 0, nitrite 0, nitrate 20 ppm from dosing, kh 3, and gh 9. Temp is about 80 to 82 degrees to keep my rams happy. I keep the lights on for only 8 hours a day and my drop checker is yellow when co2 is on. CO2 comes on about 2 hours before lights to get the co2 levels up before lights on. I dose KNO3, KH2PO4, and Plantex CSM+B according to EI for a 20 gallon. I do get gsa and sometimes gda on glass but easily can be scraped off and looks new again. But I have this brownish hair that grows on the bottoms of all the plants after awhile and takes over any kind of carpet plant i try. It kind of looks like a ball of hair or tumbleweed. I'm guessing hair algae. My otos dont touch it nor do any other fish. It grows on the substrate as well and i just cant take it anymore. It looks horrible and kills of the plants in my opinion. I follow the ei dosing with a 50 percent water change once a week. What is going on?!?!?!?