Yeah it seems to be the lighting is the accelator of algae growth. I had a BBA started, I raised up my lights and just do 4-6 hours, the BBA seems to slow down. With that, I had to cut the ferts in half too. Same logic, cut lighting hours, blackout and it makes a dent on the algae. Algae is more aggressive in a newer tank, although I didn't get much algae by controlling the lights from the beginning.