I have had luck with an unconventional means of controlling blue-green algae or cyanobacteria: house plants in the tank. I put two vine-type ivy cuttings and a "lucky bamboo" (not really a bamboo) in the tank, allowing their leaves to grow outside the tank. As the ivy grew long roots, the algae disappeared. It had been clogging the floating hornwort and growing on the gravel, swordplant, and anubius nana. Now, it is barely noticable. I think the land plants are sucking out nutrients that the algae needs, but I don't know which nutrients.
I don't know if this would work in a different tank. You have far more light and use fertilizers and C02, which I don't. That is the frustrating thing about this hobby. A remedy that works for one person may not work for another, because of any number of differences in water, light, nutrients, fish load, etc.
I am sure you will receive suggestions from others too.