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pressure fluctuations ?

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Tall Grass

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This morning I woke up and found my 5 gallon carboy of fruit juice foaming all the way into the airlock and spilling over the top :m It's been running fine for a while now and never expected this to happen. Which variable changed in this equation? The only one that I can think of is the atmospheric pressure... a big thunderstorm rolled into town last night and did a lot of rumbling until just a few hours ago.

Has anybody else here seen this sort of thing happen when wheather systems move in and out of their living area ?
 

cpfan

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Warmer temperatures can also speed up a fermentation. Although normally not associated with a thunderstorm.

Perhaps you can give us some details of what was in the carboy. Especially, timing, specific gravities.

Steve
 

Tall Grass

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ya... specific gravities on this batch are impossible to determine as of this moment *lol* I'll just say that it's been about 4 or 5 days since I removed the airlock and it bubbling perfectly until this morning when it started to overflow through the airlock.
 

cpfan

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Tall Grass:

Are you doing primary (ie the initial) fermentation in a carboy?

Steve
 

Wade E

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Brometric pressures will also raise and lower the levelas you stated. there have been many times over the years where I had an inch or maybe even a little more room before the bung and then with a storm coming noticed that all the sudden there was no room left and wine was in my airlock.
 

thirdhand2

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I saw the atmospheric pressure effect a beer I had in primary last night. Luckly it was in a bucket with lots of head space.
Art
 

Wade E

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Welcome 3rd hand, we did have a good storm here to, Another Ct'er!
 
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