A device used to prevent back flow of external air into the fermentor.

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Airlock required for lagering or conditioning?

If I put some beer in a secondary vessel for medium-term condition (e.g. lagering or dry hopping), do I need to put an airlock on it or can I just close it up with a stopper or put it in a keg and ...
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Airlock re-sanitization after minor blow-off

I had some minor blow-off enter (and exit) my airlock during the most active part of fermentation. The krausen has since gone down significantly, and there is no worry of the airlock getting clogged. ...
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after fermentation (carboy) if I put it in the fridge what do with the air-lock?

listening to an interview with John Palmer he suggests putting the fermentation vessel in the fridge (after fermentation is complete) to drop out some left over trub and yeast. I figured I would give ...
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Is it normal for one side of a two-piece (s-shaped) airlock to be empty during fermentation?

I have always used either a blowoff tube or a three-piece airlock (one with the small, floating cap on the exhaust tube) for fermentation. Today's batch is my first using the two-piece (S-shaped) ...
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3answers
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Forgot 1 piece to a 3 piece airlock, is this recoverable?

Last weekend I brewed my first batch of beer. I ordered the kit back in April because there was a Groupon and stuck the yeast in the fridge until I needed it. Its been a week and I haven't seen any ...
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Will it harm my wine to shake the container?

This is probably a really dumb question, but is it bad to shake or swirl the container my wine is in to encourage the release of CO2? I accidentally found out that jarring the container results in ...
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Homemade airlock

I recently moved to a place that doesn't allow brewing equipment to be imported (But it is legal to brew... don't ask me). I've built a lot of my stuff, but I have a question about airlocks. I've come ...
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Airlock gasket on primary fermenter fell in when reinserting airlock

I was checking the gravity on my fermenting beer and took the top off my bucket to do so. When reattaching the airlock, the black rubber gasket on the bucket fell in. I tried to fish it out with a ...
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Using StarSan in Airlock

Just getting started on home brewing and I used boiled water in my airlock. I've seen that some places recommend using sanitizer as the airlock "fill". Is it ok to use straight up StarSan in there or ...
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No bubbles in the airlock - should I still bottle the brew?

I'm attempting my first brew using a kit with all the provided ingredients (it's a lager). My brew is still in the big tub and has been there for about 2 weeks now. Initial SG was 1.040 and it's now ...
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Why do my airlocks lose liquid?

This has happened with a few batches now. My three-piece airlocks are drained of the sani inside them repeatedly. Even after a few days, when fermentation doesn't seem as rapid (and therefore the ...
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Krausen During Primary

I'm wondering what other peoples' experiences are with krausen at the start of fermentation. I've had some beers that have bubbled along happily without producing huge amounts of foam, and others ...
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Wine overflowed through airlock

I've had two demijohns of blackberry wine fermeting for about 3 weeks. One of them was slightly over filled and frothed through the airlock, leaving winey yeasty liquid in the airlock. Rather than ...
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Did I Break My Airlock?

I don't really know what I did here. I cut off the bottom little cross guy on the stem of the airlock because it was getting clogged up during vigorous fermentations. Now the middle piece just kind of ...
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2answers
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homemade wine problem

My question is in my primary fermenter. If the airlock is not bubbling does that mean its not fermenting. I have two on the go one is bubbling and the other one is. What should I do?
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What do I do about beer coming out my airlock?

Brewed a Northern Brown extract kit on Saturday, hit the target OG. Pitched yeast a little cold (63F), but activity was in full swing by yesterday morning. Woke up this morning (Monday) to find that ...
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Airlock Alternatives

Imagine that brew-day rolls around and you find yourself without an airlock for your carboy or bucket. What other things can you use in it's stead? Further imagine that you do not have the ...