I allow algae growth on the back wall of my tank and on the rocks, but remove it from front and sides of the glass. Guess it depends on the aesthetics. I don't mind a green coating on the back wall and rocks. Looks kinda natural and (if I understand it correctly) produces oxygen and eats up nitrates as well as providing food for my shrimps.
Other algae types may change my mind, but for now I am encouraging it with having the lights on approx 10-12 hours a day.
Other algae types may change my mind, but for now I am encouraging it with having the lights on approx 10-12 hours a day.