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-   -   Enough oxygen? (http://www.homebrewtalk.com/f163/enough-oxygen-266745/)

MG1602 09-04-2011 12:52 PM

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?

RiverCityBrewer 09-04-2011 01:07 PM

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.

kh54s10 09-04-2011 01:16 PM

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.

osagedr 09-04-2011 02:00 PM

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.

Greyhound 09-04-2011 03:24 PM

Quote:

Originally Posted by osagedr (Post 3228500)
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.

MG1602 09-04-2011 04:28 PM

Whacha think? Another 30 seconds?

osagedr 09-04-2011 05:48 PM

Sure 30 seconds sounds good.

MG1602 09-11-2011 01:56 PM

Added thirty seconds more, and it did wake up!


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