So over the last two months i have been getting small green hair algae blooms about the size of a fifty cent piece. it is definately starting to become annoying. does any one know what might be the cause, and is there any critters that will clear it out. All my perimeters are in check the only thing i can think of is that maybe my R O filters need to be changed. because some of my corals do not look happy. thinking some tap water may be getting though. or maybe scale back my lighting schedule as i was running them for 12 hours a day and have been backing them off about half hour once a week and now am about down to 10 hours a day