I have a batch which has been conditioning in a carboy which i racked from my primary about a week and a half ago. I noticed a couple of days ago that something was forming on the surface of the beer. At first it looked like islands of tiny white bubbles, like very small soap bubbles. Now it looks a little denser, more like trub floating on top. There isn't very much of it, it isn't covering the whole surface by any means. This is the first time anything like this has happened.
For what it might be worth, this batch was a repitch onto a once used yeast cake: at the time i racked a batch off the yeast and pitched the new wort almost immediately afterwards.
Also the smell is worrying me: it smells similar to a batch of beer that i left sitting for over a year and that had gone bad with time. I'm not sure how to describe it, other than that it doesn't smell how beer should smell.
For what it might be worth, this batch was a repitch onto a once used yeast cake: at the time i racked a batch off the yeast and pitched the new wort almost immediately afterwards.
Also the smell is worrying me: it smells similar to a batch of beer that i left sitting for over a year and that had gone bad with time. I'm not sure how to describe it, other than that it doesn't smell how beer should smell.