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Old 05-12-2008, 12:37 AM   #1
Feb 2007
Posts: 4

So I'm making a blueberry wheat, using the John Bull Masterclass kit. The SG was 1.040, and within 6 days in the primary it was around 1.008. I'm using the Safbrew WB-06 and the fermentation temp was a little high at 76 F.

So I racked it to the secondary over 5 lbs of previously frozen crushed blueberries, which ended up yielding quite a bit of blueberry juice (at least 2-3 cups). When I transfered over, there was still a small amount of bubbling occuring in the wort that was visible and a decent amount of suspended yeast.
But after 2 days, there is no activity whatsoever in the airlock.

I know that putting 5 lbs of blueberries in had to include a decent amount of sugar for the yeast to munch on, but alas no activity is visible.

Is this normal to have no airlock activity in the 2ndary after racking/fruit addition??

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Old 05-12-2008, 12:51 AM   #2
Feb 2008
Boston, MA
Posts: 107
Liked 1 Times on 1 Posts

Yes, the yeast is still active, but not active enough to see the airlock moving. It is fermenting don't worry. Relax and

99% of the time my secondary never "bubbles". 2nds are used for clearing and getting rid of most of the spent yeast from the primary.

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Old 05-12-2008, 04:19 AM   #3
Jul 2006
Posts: 305
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I would not worry too much either - fruit generally ferments very well.

I would recommend taking another gravity reading in a few days and see what it looks like then.


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Old 05-12-2008, 02:40 PM   #4
david_42's Avatar
Oct 2005
Oak Grove, Oregon, USA
Posts: 25,595
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Berries have very little sugar (~4-5% by weight) and will ferment out rapidly. Five pounds of blueberries is only a couple ounces of fructose.
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Old 05-12-2008, 09:04 PM   #5
Aug 2005
Philadelphia area
Posts: 1,573
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Agree on all points - you are fine. The second stage is about getting the flavor and color.

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