For the past couple of months I have been dealing with an algae bloom from some bad information on a water change. I was just about to give up and start all over when someone told me to go dark for a week. So I did scared out of my mind I would loose my magnifica and other anemone and corals. I have done several water changes and blacked it out only turning lights on for 2 hours a day for the light feeding creatures and this is how it looks know. Before and after. Still have 3 more days on the lights out