When to know fermentation is done.

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cphit

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I heard to look and see if no bubbles occur for 30seconds than it is done fermenting and you can bottle at this time. Any opinions on this. Thanks brewers.
 

dozer5454

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Best way is with a hydrometer. The general rule of thumb you will find when not moving the beer to a secondary (to add hops/fruit only) is 3-4 weeks. The yeast needs time to ferment but also to clean itself up. Then into the bottles for 3 weeks at 70 degrees.
 

TheZymurgist

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Enter Revvy...


Seriously, though, do a search and you'll find this question asked thousands and thousands of times. You'll get your answer there.
 

beergolf

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I'll play Revvy here.

An airlock is not a fermentation gauge. All a bubbling airlock means that the pressure inside is higher than the outside. It could bubble with a temp change, a change of pressure or for a lot of other reasons.

According to what you posted this one is not done yet.......what do you think?


the only way to tell that fermentation is doneis with a hydrometer.
 
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I'll play Revvy here.

An airlock is not a fermentation gauge. All a bubbling airlock means that the pressure inside is higher than the outside. It could bubble with a temp change, a change of pressure or for a lot of other reasons.

According to what you posted this one is not done yet.......what do you think?

http://www.youtube.com/watch?v=4jzT_KTTZ0Q&feature=youtube_gdata_player

the only way to tell that fermentation is doneis with a hydrometer.
The cat man, you forgot about the cat.
 
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