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-   -   CO2 Buildup in Ferm Chamber (http://www.homebrewtalk.com/f163/co2-buildup-ferm-chamber-258919/)

luke2080 07-25-2011 07:47 PM

CO2 Buildup in Ferm Chamber
I'm using my keezer as my ferm chamber for the first few days of my Hefe's fermentation. This morning I opened the door and stuck my head down inside to get a good look (not using a blow-off tube due to lack of room and cool fermenation anyway - but want to be sure the airlock isn't getting cruddy).

Upon sticking myhead below a certain level, I breathed in a nice breath of sulfuric/burning type air up my nose.

I've seen this in a couple of ferm chamber build posts posed as a question but I couldn't find a good answer - any problem with CO2 buildup in a ferm chamber? Probably less so for mini-fridge conversions, as the door would open and let out the CO2. But for using a keezer type setup, where the door opens up and the heavy CO2 rests inside?

The only type of gas I am familiar with supports the Dutch Oven. So thought I'd ask the question.

HexKrak 07-25-2011 07:49 PM

I don't know how long you'd have to breathe it to pass out, but I'd avoid that. Other than that I like having the nice protective layer of CO2 helping to prevent oxidation of my beer.

JoePro 07-25-2011 07:51 PM

Put a house plant near your keezer. Yaaay CO2!

rossi46 07-25-2011 07:51 PM

Mines the same way. Never had any problems with it. Just don't keep your head in there to long.

BrewForMe 07-25-2011 10:34 PM

<----can't help but stick his head in the freezer fermenter and getting a whif of the yumminess...I know i'm not the only one!

Bsquared 07-25-2011 10:45 PM

CO2 is more dense than the other components in air (N2 O2) so it will sit in there like water in a bowl. This is why in the old days when beer and wine where fermented in peoples cellars they would walk down the steps holding a candle around there waist level, so they would not suffocate walking down in to a cellar full of C02.

That burning is the CO2 dissolving in the moisture in your nose and forming Carbonic acid.

Its probably a good thing too, in that bugs(insects) wont go any where need that much CO2 and get in to your beer.

weremichael 07-25-2011 11:41 PM


Originally Posted by JoePro
Put a house plant near your keezer. Yaaay CO2!

Yeah, "house plant"

luke2080 07-26-2011 02:13 AM

Interesting - didn't think of it as a blanket overall in the keezer keeping out other nasties. And I do have a dying plant that should probably be near it. I will try to avoid putting my head inside until I pass out. Although that does sound fun.

heywolfie1015 01-18-2012 03:56 PM

Not revive a dead thread, but I just noticed this same thing this morning when I checked on my first ever lager. It was impossible to get a whiff out of the airlock because of the harsh C02-laden air. I was a little bummed because I really like smelling the airlock burps. :)

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