Thanks for pointing that out, I made a corredtion....LOL....Anyway, Cyano isn't much to worry about. You can kill off the visual stuff easy enough, but fixing the problem in the tank so you don't have to see it very often is a bit more tricky. I have some that keeps growing in my sump and it is getting Blasted with circulation. I just pull out the caulerpa that it is growing on now and then and trash it.