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SSD 12-05-2012 12:12 AM

Air lock activity
What does it mean when your activity stops, then the next day it starts up. I've added the appropriate chemicals to stop fermentation so I can back sweeten. I added the chemicals a week ago, Sunday my s lock was completely done, then Monday, there's slow activity.

KBentley57 12-05-2012 03:27 AM

It could be co2 leaving the solution. If it was done fermenting, by the hydrometer measurement, that is more than likely what is happening. Did you give it a good degassing by chance?

tweake 12-05-2012 04:25 AM

what was added?

did you rack it off the yeast before add the chem?

fatbloke 12-05-2012 04:34 AM


Originally Posted by tweake (Post 4650913)
what was added?

did you rack it off the yeast before add the chem?

Or did you cold crash it ?

Cos just adding stabilising chems won't stop an active ferment. Just prevent a finished one restarting when more fermentables are added.

Anecdotally, it does seem then only way to actually stop an active ferment is to cold crash, then while the batch is still chilled, to rack it off the sediment onto the stabilising chems - even then its not guaranteed but the most likely method for success.....

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