I have some cyano on the sand bed, but this stuff has taken over this rock and is beginning to take over the rest of the tank. On the hermits shells and any sold surface. I'm adding bacteria each day to try and outcompete it, or at least the cyano. I have a robust clean up crew. My blenny won't touch it. Have phosgaurd in and carbon. Tank is 5 weeks from being a year old. Only coral is the sad zoas and anthelia. Any idea what it is and how I fight it?
more pics here https://photos.app.goo.gl/gUUhbDNAkhNiyTVj8
more pics here https://photos.app.goo.gl/gUUhbDNAkhNiyTVj8