Thanks for the info beengirl ill look into that. Its reef safe right?
Again, I've never used it, but I've read that it's reef safe. I don't usually like chemical solutions either, but I've heard that cyano can be a real pain to get rid of.
But do figure out why you have it too. Keep up on regular PWCs, feed less, maybe add a PH to increase flow because cyano tends to grow in low flow areas, maybe need to decrease lighting time, etc.