Cyano after dinos is almost a given. They are the next surface competitor. Over time, they should be displaced by bacterial film, film algae, coralline, etc etc. It can take a good long time. Just keep up with manual removal.i think some cyanos are coming after dinos started to reduce . whats the protocol to get rid of cyanos after dinos?
Often people dump in some Chemiclean which will certainly kill the cyano, but then you are often back to dinos again.