Blow Off Tube

rednekhippiemotrcyclfreak · Nov 30, 2011

Can you predict from OG or yeast type whether you might need a blowoff tube? The highest OG I've done so far was 1.068 and I got about a 2 - 3 inch kraeusen. No problem for my 6.5 gal better bottles for 5 gallon batches. But I want to try a Ruination soon and a RIS is definitely in my future.

Kaz · Dec 1, 2011

I always use a blow off for the first few days of crazy fermentation, once it slows down little, I'll swap it out for an airlock. This eliminates the need to guess whether a particular fermentation will blow up or not. It only takes one time of cleaning yeast and trub off of the ceiling and all the clothes in the closet.

day_trippr · Dec 1, 2011

I use 6.5g glass and always use a 1" ID blow-off for the entire primary.
Every time. Period. End O Story...

Cheers!

apratsunrthd · Dec 1, 2011

There's another option. If you're using a 3-piece airlock, you don't need to stress so much. Take that floating piece out and stick a 1/2" tube on it if things start going bonkers.

glenn514 · Dec 1, 2011

I heartily agree with the above posts...I ALWAYS use a blow-off for the first couple of days of fermentation, and then switch to a 3-piece airlock. A blow-off will certainly prevent some mighty big messes...and it doesn't hurt a thing! Good insurance, methinks.

glenn514 :mug:

TomSD · Dec 1, 2011

Always, even if I know I won't need it...

beergolf · Dec 1, 2011

Each fermentation is different. I have had a fairly low gravity beer (1.052) blow off like crazy and high gravity beers not blow off.

So, I always start with a blow off tube. I really don't want to have to mop the ceiling.

Blow Off Tube

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Blow Off Tube

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