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Carboy Overflow

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wgentzel

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So I went away to Philadelphia (real ale invitational, woohoo!) after putting my third ever batch of beer in the fermenter only to come back and see that it had apparently overflowed?

I guess the yeast was more active than I thought or something. Maybe I filled the carboy too much? Anyway, I saw it for a bit before I left, the beer was getting very foamy and stating to actually come up and go through the airlock. When I came back the water in the 3 piece air lock was replaced with beer.

I carefully removed the airlocked and cleaned it, sanitized it, and replaced it after knocking out a thin layer of hops and woodchips residue that formed just below the neck of the carboy (underneath the stopper).

I assume the beer is still good, smell fine, and I'll just keep in the carboy for 2 weeks and then bottle it, but I am just wondering if anyone has any thoughts.

Did I fill the carboy too high, should I just use less water next time? Or does this happen occasionally (I cannot imagine it is supposed to).
 

Vic_Sinclair

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Happens all the time. It happens more often if you don't have enough headspace in the fermenter and when you brew high-gravity beers that have very active fermentation. The solution is a blowoff tube. You can run one from the stem of your 3-piece airlock, down into a container of sanitizer. When vigorous fermentation is over, replace it with the rest of the airlock.
 
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wgentzel

wgentzel

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Thanks for the info guys. I'm trying to work this out in my mind...

So I connect the tube to the stem/first part of the airlock then, I am assuming, I want to make sure that even when the blowoff is done, no air comes back down the tube? So i guess I can put the tube down lower below the carboy and submerge the other end in a bucket of water, so the blowoff can come out but nothing can go in?

Or is none of that necessary?
 

Dog House Brew

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Yes you need to put the end of the blow off tube into something sanitary. I have used water befroe, but just to be sure use sanitizer or something. You don't want bugs and vermine getting up your tube.
 

danorocks17

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I think i got the idea off this forum somewhere but i have a 3foot long piece of 1 in tube and it fits air tight right into the top of a glass carboy. I have the other end of the tube going into recycled fresh scoop container full of Iodaphor.
 
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