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Old 05-30-2009, 02:57 AM   #1
beerbelay
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Default Blowoff tube for a bucket

I always see blowoff tubes on glass carboys but never on the buckets. I shoved my 3/8" tubing (or is it 1/2") in the rubber bung on the top for my last brew. It was my first brew using a stepped up starter and I'm glad I did it. Are there any other ways to get a larger tube to avoid clogging or any other theories out there. Thanks

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Old 05-30-2009, 03:23 AM   #2
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Look at this picture and you'll see a blowoff tube on a bucket.
http://i593.photobucket.com/albums/t...r_and_gold.jpg

I don't see any reason not to do it. The bucket in the picture is a 6.5 gallon bucket. My 1st batch was a recipe kit, so I started out with 5 gallons volume and didn't have any krausen in the tube. My last two batches I developed on my own, so they were 5.5 gallons. I also used a starter, so I I think those two factors led to having some krausen in the tube.

I think the reason why you don't see them too often on buckets is because the 6.5 gallon buckets are pretty common and if you do a 5 gallon batch, there a lot of headroom. That would be OK for most beers. With a carboy (usually 6 gallons), the smaller amount of headroom makes the krausen more likely to reach the top. Also, I think it's easier for the krausen to climb the walls of the carboy with the taper at the top.

Either way, I think a blowoff tube is a must for primary fermentation. Once it's in the secondary (if you use one), the fermentation is less intense, and the krausen is mostly absent. Then the airlock is the way I prefer to go.

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Old 05-30-2009, 03:24 AM   #3
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1/2 inch ID tubing over the center tube of a 3 piece airlock. Don't forget to cut the cross bit off the bottom of the airlock.

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Old 05-30-2009, 03:54 AM   #4
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I just stick the tubing in the grommet a little bit. After it calms down in a couple days I put an airlock in it.

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Old 05-30-2009, 05:03 AM   #5
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I forgot to add that I removed my grommet so that I could fit a larger diameter tube in there. It's a nice tight fit and it's actually being put to the test right now. I'll report back if there's an explosion!

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Old 05-30-2009, 05:10 AM   #6
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Quote:
Originally Posted by BioBeing View Post
1/2 inch ID tubing over the center tube of a 3 piece airlock. Don't forget to cut the cross bit off the bottom of the airlock.

Same here.
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Old 05-30-2009, 05:19 AM   #7
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Actually you just haven't seen it since you are new here...My airlock blowoff tube pics have been floating around here for a over a year...

A lot of people use it. The trick is to cut off the criss cross on the bottom of the airlocks....



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Old 05-30-2009, 05:56 AM   #8
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A lot of people use it. The trick is to cut off the criss cross on the bottom of the airlocks....
OMG, yes, if your airlocks have the litle cross hair of plastic, cut the end off or you'll end up with an airlock missle at about 3am. Trust me. (note, it's not always 3am.. usually some time when you are asleep though.)
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Old 05-30-2009, 05:56 AM   #9
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I think mine survived the clog test without clogging. I woke up to this, however I did crack the lid from the afternoon til the next day, just in case. It foamed out the top all day and night. 5gal batch btw.


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Old 05-30-2009, 09:42 PM   #10
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Thanks, I'll try the airlock with the crosshairs cut method next time. Thanks for the help

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