Welcome to R2R! I would beef up the clean up crew with some Trochus and Cerith snails. Turbos maybe, but they can be bulldozers. The 10 assorted you have is a pretty low amount for that size tank. For Cyanobacteria I find flow helps, but if you can find what is feeding it, it will always go way on its own. Any heavy additives or overfeeding could cause Cyanobacteria to bloom. Good luck!