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Old 01-09-2011, 07:59 PM   #1
Nov 2010
plymouth, Indiana
Posts: 282
Liked 40 Times on 23 Posts

I brewed my first batch of all grain last week and when I put it away to ferment it was in a room with a 70F temp. It began bubbling like crazy a few hours later. I was told that was too warm so I put it in a room with a 59F temp. It stopped bubbling the next day and I let it sit for a couple more days. I felt the bucket and it felt ice cold. I measured the temp and it was barely above 50F. So I took it back up to the 70F room, shook it a bit, and it bubbled for a few more hours. Now it's not bubbling anymore. Is the fermentation already done or did I mess it up somehow?

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Old 01-09-2011, 08:04 PM   #2
Ace_Club's Avatar
Sep 2008
Chicago, IL
Posts: 43,844
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Use your hydrometer and measure the SG. Compare that with your expected FG (should be specified in the recipe). If it's in range of the FG, take another reading a couple days latest to verify no more activity.

The hydrometer is the only way to know for sure that your fermentation is done.
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Old 01-09-2011, 09:26 PM   #3
birvine's Avatar
Oct 2010
Cochrane, Ontario, CANADA
Posts: 1,506
Liked 12 Times on 12 Posts

Be a little cautious with swinging temps. The actual beer temp will be higher than ambient. Give the brew 3-4 weeks in the primary, then bottle.


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