Author Topic: Increase in FG in secondary?  (Read 1078 times)

Offline loki31

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Increase in FG in secondary?
« on: December 19, 2012, 06:23:05 PM »
Is it possible to have final gravity increase in the secondary?  I brewed an alt with German Ale yeast and have a final gravity of 1.009 while in the primary.  After letting it sit in the secondary for 10 days, the final gravity was 1.015. Is this possible or did I likely misread my hydrometer after the primary?

Online mtnrockhopper

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Re: Increase in FG in secondary?
« Reply #1 on: December 19, 2012, 06:29:27 PM »
I think its highly likely you misread the hydrometer. I can't think of how the gravity would increase without adding sugars.  Technically, if it were colder and you didn't correct for temp it would go up, but 6 points would require it to be MUCH colder I think.
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Offline davidgzach

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Re: Increase in FG in secondary?
« Reply #2 on: December 20, 2012, 05:33:09 AM »
+1.  Misread or different temps or both!
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Offline a10t2

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Re: Increase in FG in secondary?
« Reply #3 on: December 20, 2012, 09:55:57 AM »
Technically, if it were colder and you didn't correct for temp it would go up, but 6 points would require it to be MUCH colder I think.

You can't even get there since the maximum density of water is at 4°C.
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Offline hubie

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Re: Increase in FG in secondary?
« Reply #4 on: December 20, 2012, 01:14:46 PM »
Maybe your airlock wasn't on tight and you evaporated 40 percent of your beer off. :)

If you didn't de-gas your secondary sample, you might have had CO2 bubbles lifting your hydrometer.

Offline loki31

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Re: Increase in FG in secondary?
« Reply #5 on: December 21, 2012, 08:43:03 AM »
All right, I'm going with misread hydrometer because it was the same temp and 40% of the beer didn't disappear from the carboy.  Thanks

Offline lornemagill

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Re: Increase in FG in secondary?
« Reply #6 on: December 21, 2012, 09:44:37 AM »
Maybe your airlock wasn't on tight and you evaporated 40 percent of your beer off. :)

If you didn't de-gas your secondary sample, you might have had CO2 bubbles lifting your hydrometer.

+1 bubbles, measure again and spin the hydrometer

Offline musseldoc

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Re: Increase in FG in secondary?
« Reply #7 on: January 01, 2013, 08:29:44 AM »
Maybe your airlock wasn't on tight and you evaporated 40 percent of your beer off. :)

If you didn't de-gas your secondary sample, you might have had CO2 bubbles lifting your hydrometer.

+1 bubbles, measure again and spin the hydrometer

+1
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Offline jimrod

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Re: Increase in FG in secondary?
« Reply #8 on: January 25, 2013, 10:00:59 AM »
I once had a similar problem but discovered that I was sliding the hydrometer back into the plastic case too quickly and the paper inside was moving giving me off readings. Broke it and bought another one, problem solved.
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