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TheKrumm 11-23-2012 02:29 AM

Cold Crash Question
I am cold crashing for the first time and I have had to refill my airlock 3 times in the past couples days. Is there something I can do to avoid this from happening? I don't want an infected cream ale!

zzARzz 11-23-2012 02:37 AM

As the beer cools the pressure will drop inside the fermenter and that is what is pulling the liquid in your airlock into it. You can fill it 1/2 way to the "Fill Line" to prevent pulling in the liquid as well use cheap vodka in your air lock which will prevent any risk of infection.

diS 11-23-2012 05:31 AM

This happened to me but instead airlock I was using blow off with ~2 foots of tube. It was submerged in glass jar and fermenter sucked about 1 cup of disinfection agent..
I was pissed, mainly because I did't predicted it. Luckily there was no off flavors in that batch.

julioardz 11-23-2012 05:48 AM

When dropping the temp of my wort/beer in the fermentor, I leave the bucket lid loose. If I were using carboys I would spray some foil with starsan and cover the hole with no stopper or airlock until it reached the temperature I was aiming for.

dzlater 11-23-2012 11:07 AM

Instead of liquid in the airlock stick a cotton ball in there it will act as filter.

Pie_Man 11-23-2012 01:19 PM

I cover my carboy opening with several layers of paper towels or cotton gauze/bandage type material whenever crash cooling. As an added protection I dampen the material with starsan. I then secure it with a rubber band. This approach has been working well for me and was recently discussed in a BYO article.

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