I am thinking of giving in and trying Marine S.A.T. or something else you recommend to take care of my algae. The Cyano is localized to two areas now and is very small, but I can't get rid of it completely. What driving me nuts is this "turf algae" I talked about in a previous thread. Its really starting to spread and I can't get rid of it. Scrubbing won't even take it off, its like its crazy glued to my rock. none of my CUC seems to touch it, and I'm worried its gonna get out of control if I don't do something. Thing is I can't find this S.A.T. anywhere locally, even the mail order place I use doesn't have it. Anything else that is reef friendly and works? Thanks!