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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > First Timer - Question about Fermenting
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Old 02-25-2013, 05:57 PM   #1
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Default First Timer - Question about Fermenting

Just made my first wort yesterday and have it fermenting in a carboy. Is it normal to have foam coming out of the airlock?

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Old 02-25-2013, 06:00 PM   #2
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Sounds like you need to rig a Blowoff tube. There are several threads on here about how to do it. You can also Google it


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Old 02-25-2013, 06:10 PM   #3
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The short answer is yes. For primary fermentation many people use a blowoff tube instead of an airlock to avoid this.

One end of the tube attaches to the carboy/bucket/better bottle, and the other end goes into a jug or bucket with water in it. Same concept as an airlock where CO2 can escape but nothing can get in. The blowoff tube will collect the foam instead of it going all over your carboy, or your floor.

There are many ways to do the same thing. If you are dry-hopping, use a 1" tube so the hops are less likely to clog up the tube.

- 1" tube right off the top of the carboy: http://beereasy.com/blog/wp-content/...0/img_3431.jpg
- Appropriately-sized tube off an adapter like this one: http://www.homebrewtalk.com/gallery/...blow_off_2.jpg
- Half-inch tube off the largest part of a three-piece airlock (this is the method I currently use): http://www.homebrewtalk.com/gallery/.../Ailockbo1.jpg

There are other methods, but those are the ones I'm familiar with.

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