So out of left field i have a huge problem with what i think is Cyano algea. Its green and is covering my rock and carpets on the sand bed. It can be blown off extreme easy but it looks like hell! The tank is coming up on 2 years and iv never dealt with this before. Im using RO water and all my parameters are in check. The only thing iv started dosing is liquid Calc/alk to keep it stable. My lights run from about 10 am to 6pm then the blues turn on for a few. What could cause this and how do i treat the problem? Like i said all my parameters are in check and stable. I can blow this stuff off my live rock before i go to bed and its back full force in the morning. Any tips? thanks !