I just ordered an oxygenation system from Williams and have a simple question.
Oxygen then yeast, or yeast then oxygen, or makes no difference?
I do oxygen, then yeast.
30 Gallons - Malty Moe APA
I do oxygen, then yeast, then more o2 per the instructions that came with my system. It states you can continue adding o2 up until fermentation begins. I don't go that far, but I've to o2, yeast..waited an hour, then more o2.
I don't know that matters. However, if it does, you want the oxygen first.
(this coming from the guy that still just shakes the carboy )