Cyano is not the end of the world. Keep calm and turn your lights off...
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...3 days a month, followed by one day of blues-only so as not to shock your inhabitants, or burn your corals.
Have your skimmer operating at peak efficiency. This will uptake whatever the dieoff releases.
Cyano is not an algae: it's bacteria that produces oxygen. It doesn't really hurt much, except by blocking light.
Most new tanks get it right after they get rid of hair algae. Most tanks get it once a year as the sun migrates into a position where a ray of light hits the tank for a few minutes a day---or when the lights have burned down to a spectrum cyano loves.
Where do you get it? Well, cyanobacteria is the foundation of our oxygen atmosphere---it restored it when the Permian Extinction wiped out most life on the planet [look it up] and it exists in about every body of water. It's the foundation of photosynthesizing elements in green growing plants, like that innocent little violet on your side table. And it's so available everywhere, never ask where you got it or worry about it.
They'll tell you suck it off with turkey basters (works) and increase your flow (well, yes, that's helpful, but it'll develop in an incredibly hard flow) It needs 3 things to live: light, water, and carbon---which is the basis of life on this planet and is abundant in all tanks. Guess which one we can deprive it of safely.
Light. Don't shroud your tank (you can have fish sleep so hard they get eaten by snails) but just turn off your lights. Draw the drapes if any are open. That's all. The fourth day, run only your blue or moonlights. Then back to normal. Do this once a month, running your skimmer at max efficiency.
May take a few months.
But of all plagues, this is the most benign. Those bubbles are pure oxygen. Did you know some varieties of this half plant/half animal stuff actually crawl? As I say, look it up---very interesting, very ancient stuff.
And not worth a panic.
