I have had nuisance algae and cyano in my 100 gallon tank for the last several months and could use some advice on dealing with it. The algae is bright green...like neon green / non filamentous. I have been set up for ~ 5 months at this point. I have 2 SB Reef lights on the ends of this 6' tank...have not bought one for the middle yet. The Algae / cyano issues are concentrated on the ends where the lights are w/ virtually none in the middle. Using RO/DI water for changes. I don't have my water parameters at the moment. I have shut off the white spectrum for several weeks and that seems to take care of the green as long as I leave it off. (Don't like just running just the blues though) I have mainly fish in the tank at the moment ~ 12 damsels of various types and a few corals ...feeding 1x per day . I have crushed coral in the bottom and am thinking about removing it and either leaving the tank bare bottom to cut down on the places where waste is accumulating or replacing it with new Caribsea sand. I have just purchased a dual BRS reactor for carbon and GFO that I'll be installing this weekend and some Chemclean for the cyano. I am running a sump with old school blue bio balls but have thought about how I could rework that into something more effective and modern. Using an MRC skimmer...btw. I want to create a mixed coral reef but feel like I need to get my algae issues under control 1st. Any advice for improvements?