My lights are on a timer and run for about 9 hours a day. I do have a small patch of hair algae that I allow to grow in the tank because my puffer and bullet goby both graze on it, but if it starts growing anywhere else I just scrape it off.
My Puffers: lineatus R.I.P, South American puffer. Non puffer Danios, Tetras, Redtail Rasporas, Harlequins, CAE's, Yoyo Loaches, Clown loaches ,Eels, various shrimp,