[QUOTE = "Miguel mail: 457553, member: 8306"] There you stressing there was what I thought the whole brewer environment was agreed. Way back to the oldest papers'ene I've read until now it says that oxygen promotes yeast growth.
And that's just to ask why you are using a magnetic stirrer or agitator, I mean. [/ QUOTE]
Oxygen at the correct dose is good. Less = less growth. Too much = diminishing returns and possibly promoting stress for the yeast.