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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Enough oxygen?
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Old 09-04-2011, 01:52 PM   #1
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Default Enough oxygen?

Brewed a 1.071 DIPA last night, and oxygenated with a O2 tank and stone. I was at the last of my tank and got out about 60 seconds of O2, but it was a weak output. I saw it starting to foam on top, so I knew it was getting oxygen. Would this be enough to have a healthy fermentation? My ferm has not started yet, so can you add oxygen before it starts?

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Old 09-04-2011, 02:07 PM   #2
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Anything is better than nothing so I think you will be fine. Anyway, slower is better because the oxygen dissolves into solution instead of just making foam on the surface.

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Old 09-04-2011, 02:16 PM   #3
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Those who don't have aeration equipment just slosh the bejeebers out of the wort... So if I was unsure of the O2 from the tank I would have shaken it also.

I think that you probably got enough oxygen in there and fermentation has probably started even if you don't see anything so I would not add any O2.

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Old 09-04-2011, 03:00 PM   #4
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I've seen folks who advocate a second O2 addition very soon (like, you aerated pitched yesterday, so aerate again today) after fermentation begins for big beers. Go ahead and hit it again; you won't hurt anything but you'll feel better and ensure a healthy fermentation.

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Old 09-04-2011, 04:24 PM   #5
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Quote:
Originally Posted by osagedr View Post
I've seen folks who advocate a second O2 addition very soon (like, you aerated pitched yesterday, so aerate again today) after fermentation begins for big beers. Go ahead and hit it again; you won't hurt anything but you'll feel better and ensure a healthy fermentation.
+1

In "Yeast", White & Zainasheff recommend adding a second dose of oxygen after 12-18 hours for beers over 1.083. I think it would help in your case also.
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Old 09-04-2011, 05:28 PM   #6
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Whacha think? Another 30 seconds?

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Old 09-04-2011, 06:48 PM   #7
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Sure 30 seconds sounds good.

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Old 09-11-2011, 02:56 PM   #8
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Added thirty seconds more, and it did wake up!

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