Recently had a outbreak of this crap that I presume to be cyano, it does seems to be cyano since it has the same characteristics (covers like a mat, easily removable) but does not go away when the lights are out and has never been red only a dark purple/brown. It’s my first time dealing with this stuff and I’m not sure how to get rid of it, I’ve been sandvacing when I do a water change but it just appears the next day, I am running a higher nutrient system but still not sure what exactly this stuff is any help?



