If you google this stuff: 1) it's why our planet has an oxygen atmosphere, after the Permian extinction.
2) it thrives on ANY nutrient plus water, carbon, and sunlight, and can adapt to any OTHER nutrient if one runs out. Some varieties crawl.
3) it's the basis of the chloroplasts (light-conversion cells) in all green plants on earth, so it's probably about as universal a thing as you can get. The only place free of cyano might be the Atacama Desert in Peru---oops, no, they just found dormant plant life there, too. So forget being rid of it.
HOWEVER: there's one thing we can take away from it that will let our skimmers scarf up the residue: light. The 3-day lights-out won't hurt corals or fish, is gentler than the dieoff you get with chemical remover, which is an antibiotic that will kill, yes, bacteria; and if you repeat it monthly, you will get relief. If you use mh lighting, do a 4th day of actinic only.
Patches love to grow where slanted sunlight reaches the tank (maybe it mimics the Permian extinction sunlight, filtered through thick noxious cloud) and blooms also happen where tank lighting has changed spectrum and hit the downslide.