I'm going to try this (with oxygen instead of shake n' bake) tomorrow for a beer I'm hoping to brew Sunday and have a couple of questions.
How many seconds of pure O2 with a 2 micron stone into 1 liter?
How do you know when you're completely at high krausen without going past it? Is it better to crash a little sooner or a little later?
On brew day, should I decant and then let the slurry warm up prior to pitching? Or take out of fridge, decant, and pitch still cold? (In the past, I've always done the latter but not sure it's correct.)
Thanks for any comments!
Edit: actually my stone might be 0.5 micron -- I can't remember. It's stainless on a wand. I got it at Williams several years ago, but they no longer have a record of the transaction in my account. Don't know if it matters for the bubbling time? In 5.5 gallons I always bubble for 45 to 60 seconds.