Blow off tube

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MikeM

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My next batch is going to be an amber ale(extract with grains). I will be using a starter and expect some pretty vigorous fermentation at first. I am planning on using a blow off tube. Do I keep the blow off tube on for the whole fermentation (approx 10-14 days) or do I replace it with an airlock once fermentation has slowed?
Thanks,
Mike
 

ifishsum

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I replace it with an airlock once it's clear that fermentation is slowing down, usually after 3-4 days.
 

CADragon

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If I'm lazy and don't feel like sanitizing the bung and airlock, does it really make a difference for a 7-10 day fermentation if you leave the blow-off tube the whole time?
 

Wild Duk

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you can leave it on as long as you want......It does the same thing as a 3 piece airlock
 

MMW

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I leave mine in the whole time due to clearance issues in my chamber.
 
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I leave mine on for the entire first week, until the Kraussen falls. Right, wrong, or indifferent, I always use secondary fermenters, and use a 3 piece air lock on it. It might be in my head, but I like to think it is clearing up, and I am able to filter anything out of the secondary.
 
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