http://saltaquarium.about.com/cs/algaecontrol/a/aa071103.htmit my be my cheap kolorscape sand I added but we'll see if it lasts. The tangs are eating it off the side of the tank so that is all cleaned up now. I'm going to do 20G weekly water change for the next few weeks. Vacuuming the bottom doesn't seem to help much more then just sifting if with this fancy comb. Here are some shots of the ugly.
