Starsan getting sucked into fermenter? - Home Brew Forums
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Old 12-28-2012, 06:59 AM   #1
TheHumanSwing
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Dec 2012
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So I am two weeks into fermenting a five gallon batch in a 6.5 gallon glass carboy, and today I noticed that my airlock started sucking in the starsan in it. Why is this happening?



 
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Old 12-28-2012, 07:10 AM   #2
highgravitybacon
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Sep 2012
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Quote:
Originally Posted by TheHumanSwing View Post
So I am two weeks into fermenting a five gallon batch in a 6.5 gallon glass carboy, and today I noticed that my airlock started sucking in the starsan in it. Why is this happening?
Your beer sucks.

Because it's cold and that creates a vacuum in the fermenter because the volume of air decreases. And there's no CO2 pushing out on the airlock.

It's fine. I've spilled enough StarSan in a beer before to count it as a dry hop addition.

 
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Old 12-28-2012, 07:12 AM   #3
iaefebs
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Aug 2010
West Coast, MI
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Is the carboy getting colder?

 
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