I brewed today and pitched at a temp slightly on the high side. So I put my primary in my beer fridge to bring down the temp a few more degrees. I just checked and there is airlock activity just 2 hrs after pitching. Is this just activity caused by the warmer air in the primary escaping because the wort temp is higher than the ambient temp in the fridge?
Could there be fermentation activity just 2 hrs after pitching?