Mpavlik22
Well-Known Member
Zeppman said:From what I've heard, you don't need to have it full open. If you see bubbles at the surface, that means that the o2 you see bubbling is not being absorbed. You want to open it enough just to the point before where you start to see bubbles on the surface of your wort.
I just listened to the podcast about aeration on brewing network. Something I found very interesting is that the oxygen is not absorbed so much when it bubbles and rises to the surface. The majority of the oxygen is absorbed after it fills the head space of your fermenter and is absorbed across the surface of the liquid.