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Old 04-25-2013, 12:38 PM   #1
Mar 2013
Posts: 11

Would like to know if head space is important in Primary,or is it more for the secondary carboys.I imagine the Co2 keeps the oxygen out in primary Thanks

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Old 04-25-2013, 12:46 PM   #2
Nov 2011
Atlanta, Georgia
Posts: 1,246
Liked 75 Times on 66 Posts

Head space isn't an issue in Primary. I use my 6.5 gal carboy for 5 gallon batches. You need the room for Krausen (mostly in beer) and yes, the CO2 will blanket the must/wort. I also make 2 gallon batches in 5 gal carboys and 1 gallon batches in 3 gallon carboys sometimes.

Secondary is where you have to worry about headspace and top up if necessary. If you transfer before the bulk of the fermentation is complete you can get away with a little headspace in secondary.

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