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Old 02-11-2013, 02:22 PM   #1
bierandbikes
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Default airlock won't stay in carboy

I can't believe I am the only one with this problem. My stout was bubbling along just fine with a blowoff tube for a couple of days. I then checked it last night and the stopper is out...I don't know for how long. I messed with it for a while and finally think I have it fixed but this morning I had the same problem. I switched to a standard airlock, but having the same issues. It just slips out.

Any ideas for keeping it sealed but still able to remove it once the fermentation is complete?

Hopefully I did not get any contamination as this was a relatively expensive brew.



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Old 02-11-2013, 02:28 PM   #2
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I have a few weird rubber stoppers that tend to pop back up out of a couple of my more narrow-necked carboys. I try to use my red rubber carboy caps with those carboys, the ones that cover the neck completely. If I don't have a carboy cap available, I'll secure the stopper with a few wraps of electrical tape.

I doubt you had any contamination as the stout was emitting lots of CO2 before you discovered that the stopper was out.



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Old 02-11-2013, 02:33 PM   #3
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My glass carboy does that too if the rubber stopper or the neck of the carboy is wet. I just wipe it dry and it stays in place

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Old 02-11-2013, 02:33 PM   #4
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My last batch i also had this issue, i have a carboy handle which made a convenient point to anchor a piece of twine to tie the stopper down.

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Old 02-11-2013, 02:42 PM   #5
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Quote:
Originally Posted by kfz
My glass carboy does that too if the rubber stopper or the neck of the carboy is wet. I just wipe it dry and it stays in place
Same here. I just wipe them dry also.
I did have a problem with one that still wouldn't stay in so I just used a couple pieces of tape to secure it.
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Old 02-11-2013, 03:15 PM   #6
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When I first put the stopper into my carboy, I dry the carboy neck (below the very top) and place a layer of duct tape around that, and then put strips of duct tape over the stopper secured to the ring of tape. That ensures it stays on. Tends only to be a problem for me at the beginning of fermentation when things are most vigorous, though.

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Old 02-11-2013, 03:23 PM   #7
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This is why I love carboy caps that completely cover the neck of the carboy. So much easier to get on/off and no slippage from being wet.

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Old 02-11-2013, 06:08 PM   #8
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Are the carboy caps air tight? I seem to recall seeing something about them not being air tight like the stoppers. Also, will they stay on during extreme fermentation such as with a Bavarian weizen? I have never been truly happy with the standard stoppers so I am ready to try something different.

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Old 02-11-2013, 06:22 PM   #9
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Quote:
Originally Posted by bierandbikes View Post
Are the carboy caps air tight? I seem to recall seeing something about them not being air tight like the stoppers. Also, will they stay on during extreme fermentation such as with a Bavarian weizen? I have never been truly happy with the standard stoppers so I am ready to try something different.
I never liked the fit of the orange carboy caps, but these red rubber ones fit air tight and don't slip when wet. I get hearty blowoff through mine without them coming off (like this).
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Old 02-13-2013, 06:42 PM   #10
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same issue on my 3 gallon carboy. Take some aluminum foil (the width of the stopper) and wrap it around the stopper. It stopped mine from popping out



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