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Home Brew Forums > Home Brewing Beer > General Techniques > o2 Aeration times?
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Old 12-24-2008, 10:37 PM   #1
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Default o2 Aeration times?

how long do you let the o2 run with a stainless steel air stone? I've done 2 minutes but wonder what others do


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Old 12-24-2008, 10:41 PM   #2
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Honestly, I would like to do it longer but my carboy fills up with foam so damn quickly that about 2 minutes is all that I can do before it starts coming out of the neck.


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Old 12-24-2008, 11:09 PM   #3
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I do between 20 and 30 seconds. I always reach my predicted final gravity. I don't get any off flavors associated with stressed yeast. One can of O2 lasts me about 25-30 batches.
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Old 12-25-2008, 12:43 AM   #4
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I read somewhere 30 sec for average OG and 1 minute for high OG.

That is what I've been doing and has been working great. Even for RIS and Belgian Quads.
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Old 12-25-2008, 01:44 AM   #5
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I do 30 seconds as well, always seems to work well.
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Old 12-25-2008, 03:31 AM   #6
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between 30s and 1m. i swirl the carboy vigorously to keep the bubbles in suspension. happy yeastys.
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Old 12-25-2008, 04:32 AM   #7
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I've heard about a minute will give you 80-90% saturation, and 90 seconds will give you 100%++...or something along those lines. Either way, I shoot for 90.
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Old 12-25-2008, 12:34 PM   #8
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The instructions with my O2 kit said 45 seconds for beers under 1.060, and 90 seconds for thos above. That's what I have always used.
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Old 12-25-2008, 01:42 PM   #9
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I do 30 seconds for 5 gallons, 45 for higher gravity (with a .5 micron stone). Always worked for me 8ppm is all you need for lower gravity beer, 16ppm for above 8%, above 40 ppm you start risking off flavors(I've read).

The time to get enough depends on the pressure of the O2 bottle, the temp of the wort, and the size stone you are using. With 80ish degree wort and a .5 micron stone 30 seconds has always worked fine for me. My lag times are usually between 2 and 4 hours and they always ferment out.
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Old 12-25-2008, 02:43 PM   #10
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^^^ what they said.


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