I brewed a hoppy red ale on Tuesday and pitched some washed wyeast 1084 into it that evening. I had an og of 1.070 and went ahead and put a blowoff tube on the fermenting bucket in case I had a huge krausen. I did not see any fermentation bubbles, and later realized that the seal was not as tight as I thought it was between the tube and bucket lid. Today put in a regular airlock and noticed a strange green scaley looking growth on the top of my beer. Is this some sort of contamination? A picture is attatched...! I'm new to the site so i can't post the picture on here. However, you can check out my HBT post with the pic here http://www.homebrewtalk.com/f163/contamination-whats-305419/ Thanks!