Originally Posted by chadman
u say about cutting back time the lights are on...what if u have corals couldn't this hurt them?
Yes, I do not believe in that method. You need to remove the source that is causing the algae, either bad bulbs, nitrates, phosphates from tap water, leaving the lights on excessively (more than 12 or 13 hours per day), not a good enough clean-up crew, not enough flow, etc.