So I have a Belgian Ale in primary and used an airlock. It seems to be bubbling very irregularly. (yes sometimes I stare at the airlock). Almost all of my previous batches were very regular, almost metronome-like. This one bubbles for five or six times, rests and then bubbles for one or two, etc.
Is this odd? (there is starstan in the three piece airlock, on a BB with a carboy cap).