Cyanobacteria and temps

[seastar]

Any truth to lowering temperatures on that tank to say, lower 77's maybe into the 76's and helping with cyanobacteria? I think Im finally at the tail end of this thing but would like to give it the knockout punch. I had read 76-80 is common for most reefers and I did '79 for my birth year, but Im thinking about slowly lowering it.