Oh no, not at all. I have a full on cyano bloom in my tank at the moment, but it seems to only be on the sand in the front of the tank, and in the prop section of my sump. That is why I want to do a good cleaning during my weekend water change, to get rid of this stuff that is fueling its growth.
Using AZNO3, you must run your skimmer. Usince Chemi-Clean, you can't use your skimmer. So you have to fight one battle at a time. For now, siphoning it out is my weapon of choice.