Sometimes the best way to achieve and maintain balance is to perform large water changes and add ferts and CO2. My tanks get overrun by algae if I don't put in the liquid ferts and/or the CO2 isn't running. The idea is to jack the plants' metabolism, and they will outcompete the algae.
So, because I'm doing ferts and liquid carbon, am I doing too little of these to go with the lighting? I think I'm doing plenty of water changes. Though there could be phosphate in my water, and the test kid bugged. I read somewhere, maybe... Probably got this wrong, but that phosphate has seen to encourage flowering in apon. crispus plants.. Like mine is atm. Can't remember though. I might just cut down on feeding, but the lights on 10 hours and 4 hours midday burst and see if it helps.