So I've been having this problem with green hair algae for almost 6 months now. I've tried everything as far as natural remedies (cut back on lighting times, lowered intensity, even did a black out) to get rid of it but I've had no luck. I'm mixing my own water and I have a 6 stage RO system. I donwater changes of 30% every other Monday and even tried doing 15-30 gallon change ever 3 days but this algae doesn't want to go away....any suggestions on what I can do?? Thanks in advance for help, it's been really frustrating trying to get it under control.