Still working on my first attempt at a lager. Four weeks at 50 degrees using Wyeast 2124 Bohemian Lager Yeast. I pulled it out yesterday and moved it to the secondary. Problem is that although it had no more activity at 50 degrees, when I moved it to 58 degrees for the 24 hour diacetyl it started fermenting again. So much so, that for a bit I thought I might need a blow off (secondary was filled pretty high.) Anyway, by tonight it had settled down and I moved it back to the frig at 40 degrees.
Question, is this activity common during diacetyl? Or did I just stir it up too much during racking?