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-   -   o2 Aeration times? (http://www.homebrewtalk.com/f13/o2-aeration-times-94456/)

Gnome 12-24-2008 09:37 PM

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

eschatz 12-24-2008 09:41 PM

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.

chase 12-24-2008 10:09 PM

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.

B-Dub 12-24-2008 11:43 PM

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.

conpewter 12-25-2008 12:44 AM

I do 30 seconds as well, always seems to work well.

SenorWanderer 12-25-2008 02:31 AM

between 30s and 1m. i swirl the carboy vigorously to keep the bubbles in suspension. happy yeastys.

Pelikan 12-25-2008 03:32 AM

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.

RichVT 12-25-2008 11:34 AM

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.

budbo 12-25-2008 12:42 PM

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.

Saccharomyces 12-25-2008 01:43 PM

^^^ what they said.


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