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Old 03-07-2013, 02:13 PM   #1
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Default Airlock

I'm a beginner, after six days have not seen airlock activity in my lager.
Is this a bad sign?
Thanks

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Old 03-07-2013, 02:14 PM   #2
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Nope, normal.

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Old 03-07-2013, 02:15 PM   #3
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From what I've read that's not necessarily a sign that the yeast isn't doing it's thing, but it's certainly worth having a look and/or a hydrometer reading at this point.

(I'm new too so default to others' advice over mine).

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Old 03-07-2013, 02:51 PM   #4
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As useless as an airlock is a a gauge of fermentation in ales, it's even more useless for lagers. Remember gas EXPANDS when warm and contracts when cold. So therefore since an airlock is really only a vent to release EXCESS co2, there often isn't any co2 that needs to vent out, because it's contracted by the cold of the fermentation.

So it's even more important to use you HYDROMETER, to determine "activity," since a decrease in gravity really is the only way to know for sure.

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Old 03-07-2013, 03:24 PM   #5
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Thanks so much!
Would your recommend taking a reading now? (After six days) And one next week after two weeks?

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Old 03-07-2013, 03:28 PM   #6
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Quote:
Originally Posted by Revvy
As useless as an airlock is a a gauge of fermentation in ales, it's even more useless for lagers. Remember gas EXPANDS when warm and contracts when cold. So therefore since an airlock is really only a vent to release EXCESS co2, there often isn't any co2 that needs to vent out, because it's contracted by the cold of the fermentation.

So it's even more important to use you HYDROMETER, to determine "activity," since a decrease in gravity really is the only way to know for sure.
Thanks so much!
Would you recommend taking a reading now (after six days)? Or wait till next week after its been two weeks?
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Old 03-07-2013, 03:34 PM   #7
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It's a diagnostic tool. You're not sure what your beer is doing, right? Then if that's the case, you taking the reading will tell you what your beer is doing, and therefore either ease your mind, or will till you if there's a problem.

I always make the analogy that taking a gravity reading is like a doctor using a tool like and ekg or an x-ray- you can't always rely on your senses to know what's going on. An airlock may or stop bubbling due to everything from barometric and temp changes, a leak in the bucket, to a truck rolling down your street, so it's NEVER a reliable indicator of what's happening.

But a hydrometer reading is. So if you've got a concern then use it.

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Old 03-07-2013, 04:35 PM   #8
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Quote:
Originally Posted by Revvy
It's a diagnostic tool. You're not sure what your beer is doing, right? Then if that's the case, you taking the reading will tell you what your beer is doing, and therefore either ease your mind, or will till you if there's a problem.

I always make the analogy that taking a gravity reading is like a doctor using a tool like and ekg or an x-ray- you can't always rely on your senses to know what's going on. An airlock may or stop bubbling due to everything from barometric and temp changes, a leak in the bucket, to a truck rolling down your street, so it's NEVER a reliable indicator of what's happening.

But a hydrometer reading is. So if you've got a concern then use it.
Thanks for all your help!
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