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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Vacuum in fermenter?????
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Old 03-26-2011, 03:00 PM   #1
Bluedog
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Default Vacuum in fermenter?????

Good morning all, according to my airlock, there is negative pressure in my fermenter. I've never seen this before Is this common?
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Old 03-26-2011, 03:06 PM   #2
brewit2it
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Gas pressure decreases when temperature drops.
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Old 03-26-2011, 03:07 PM   #3
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Yes! Not unusual. Detach your airlock and reattach it:

http://www.homebrewtalk.com/f39/airl...vacuum-143482/
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