If you want to remove it. Use Erythromyacin. It's an anti-biotic and it will kill the bacteria.
However it will just come back again if you don't remove the excess nutrients that are causing it. Also, how old are the bulbs on your setup?
I've seen light bulbs be the issue as well. 9-12 months is the longest you should really go as over time the color spectrum of the lamp shifts, more towards the blue side of the spectrum, which just feeds the Cyanobacteria.