Cyanobacteria it has been on the earth for millions of years and we have all dealt with in in our reef tanks. Nobody really knows 100% why it comes and goes and some people get it at the same time of year every year. Tell us about your experiences with Cyanobacteria and how you dealt with it and if it stayed gone.
(Below image Borrowed off Internet not mine)
(Below image Borrowed off Internet not mine)