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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Overactive fermentation???
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Old 10-21-2009, 09:04 PM   #1
EKennett
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Default Overactive fermentation???

Hey guys, just put up my very first batch of homebrew! It's an American IPA extract kit from Williams Brewing. Smells yummy.

I have a question about my yeast and fermentation. I made a starter out of the Wyeast American Ale yeast and got a nice 1/4" thick sediment layer on the bottom of the flask. I pitched that to my cooled wort in a plastic bucket fermenter and topped it with an airlock. I have a very healthy looking krausen going on after 2 days of resting. So much so that foam is blowing out the top of the airlock. I took the airlock and stopper out today, cleaned and resanitized them, and put them back in, but it's still bubbling out. Is this ok? Should I do anything? I don't want the holes in the airlock to clog and cause pressure to build. Thanks for the advice!!

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Old 10-21-2009, 09:08 PM   #2
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Just keep cleaning it up & keep it sanitary (Star-San). It sounds like you might be fermenting a little warm. Ideally the beer (not the room temp) should be around 65 F or less.Preferably less. I keep mine at 62 F.

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Old 10-21-2009, 09:11 PM   #3
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Blow-off tube.

Basically a tube that fits in the neck of the carboy with the end submerged in a bottle, jug, etc... of sanitary liquid.

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Old 10-21-2009, 09:17 PM   #4
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Actually if you have an airlcok blowoff right now it's best to clean, resanitize and install a blowoff tube.

Here's what I do with a 3 piece airlock,



The tube is the one that came with my bottling wand, with a tiny slit in it. I also saw/break off the little chriss/cross at the bottom of the shank, which helps keep goop from getting stuck.

The picture is just for illustation only, you actually want the container of sanitizer to sit below the fermenter.

But a blowoof just means you have a HEALTHY fermentation. It's OK!!!

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Old 10-21-2009, 09:30 PM   #5
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The picture is just for illustation only, you actually want the container of sanitizer to sit below the fermenter.
Why is this? I actually have mine sit on a ledge in a chest freezer, about an inch below lid level, and I still get some beer flying into the water. Does it create less pressure?
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Old 10-21-2009, 09:50 PM   #6
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Why is this? I actually have mine sit on a ledge in a chest freezer, about an inch below lid level, and I still get some beer flying into the water. Does it create less pressure?
It helps prevent....what's the term..."back wash?" "Back peressure?" Sucking the stuff back into the fermenter, if the temp changes or their is changes in air pressure......but I think an inch below lid level is fine...it I think the issue is that if it is a little lower than the top of the fermenter it is fine.

I usually prop mine on a stack of old vhs tapes until the hose hangs low and not too low to crimp the end at the airlock....
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Old 10-21-2009, 10:14 PM   #7
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Revvy, that's the exact airlock I have. I have some extra tubing lying around, maybe I will sanitize it and give that a shot.

I'm not worried at all about the actual fermentation, it looks like it's going great. It's in my pantry which stays in the low-mid 60's. Very excited to have a homebrew :-p

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Old 10-21-2009, 10:53 PM   #8
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I usually prop mine on a stack of old vhs tapes until the hose hangs low and not too low to crimp the end at the airlock....
I use a racking cane holder to hold the hose in place. Not as scientific as VHS tapes mind you, but I would argue equal to more effective.
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Old 10-21-2009, 11:08 PM   #9
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Also, check into Fermcap-S, if you want to bypass the blowoff. There's nothing wrong with using a blowoff, but it can be a mess.


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Old 10-21-2009, 11:24 PM   #10
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Quote:
Originally Posted by TexLaw View Post
Also, check into Fermcap-S, if you want to bypass the blowoff. There's nothing wrong with using a blowoff, but it can be a mess.
I recently started using Fermcap and it works brilliantly.
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