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Old 02-13-2009, 01:12 PM   #1
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Default Oxidation issue when racking to a 6.5g?

I know it is pretty unorthodox, but after it had fermented down to 1.008, I racked my 5 gallon batch of pear/apple cider to a 6.5 gallon bucket. I knew i was going to be adding multiple pounds of fresh pear so i needed the room.

I figured the fresh pears would begin to ferment somewhat displacing the oxygen in the headspace. However, the sweet mead yeast must have crapped out because I'm not getting any fermentation. (my apple ciders using 4184 finish around 1.010)

I need the room the 6.5 gal bucket provides for the added fruit, but am I taking a big risk of oxidizing it? what would you guys do?


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Last edited by wreckinball9; 02-13-2009 at 02:05 PM.
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Old 02-13-2009, 05:35 PM   #2
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Originally Posted by wreckinball9 View Post
I know it is pretty unorthodox, but after it had fermented down to 1.008, I racked my 5 gallon batch of pear/apple cider to a 6.5 gallon bucket. I knew i was going to be adding multiple pounds of fresh pear so i needed the room.

I figured the fresh pears would begin to ferment somewhat displacing the oxygen in the headspace. However, the sweet mead yeast must have crapped out because I'm not getting any fermentation. (my apple ciders using 4184 finish around 1.010)

I need the room the 6.5 gal bucket provides for the added fruit, but am I taking a big risk of oxidizing it? what would you guys do?
Here is the way it was explained to me. There is still a layer of air over the surface area of the must regardless of how small the layer whatever it is. The bigger the surface area exposed the more the likely hood of oxidation. Hence the shape of the carboy.

If you put the fruit in and the liquid rises to the neck portion of the carboy you should be ok.

I didn't know any of this until I started coming here. Sad to say I have five gallons of cider in a 6.5 carboy right now. So I'll post what happens to it here.
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Old 02-14-2009, 01:33 AM   #3
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The bigger the surface area exposed the more the likely hood of oxidation. Hence the shape of the carboy.

this isnt an issue for primary fermentation is it?
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Old 02-15-2009, 09:42 PM   #4
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this isnt an issue for primary fermentation is it?
no because the active fermentation will produce more than enough co2 to push the air out.


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You must love this country more than I love a cold beer on a hot Christmas morning. - Homer S.


And how is education supposed to make me feel smarter? Besides, every time I learn something new, it pushes some old stuff out of my brain. Remember when I took that home winemaking course, and I forgot how to drive?- Homer S.
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