No excuse to have cyano in the tank, just use chemiclean...Why?
Never had a real algae issue before. Turf algae took over. I added some urchins but I'm not sure they eat this stuff.
The alveopora never came out again. One has died the other just exists.
The constant cleaning is how I managed to get velvet into the tank. Currently, the tank is for all practical purposes dead. After the fish came out the algae started to die off. So did all the coral.
Never any measurable nitrate or phosphate before or after. Dosing nitrate just greens up the algae.