Tony, hard to tell from the photo, but is your skimmate more of a greenish tint, as opposed to the normal brownish color? Since I started bubbling, my skimmate appears greener in color. At first, I was also dosing peroxide for a small bryopsis issue, but I stopped that within the first week and did an aggressive rock dip in peroxide and yet my skimmate is still foaming out with a greenish tint. I've never had a greenish skimmate prior to bubbling.