I think you mean cyano
bacteria and it isn't that.
Have you felt it?
If its feels furry its red turf algae and is extremely hard to get rid of it once it starts to spread, I am batteling it now and only just winning the battle after around a month. Remove the rock with the worst of it on immediatly , it took over my tank in no time and started to smother corals.
Google red turf algae and you will see, it is a very hard algae to get rid of and is one of the worst algaes that can pop up in our systems.