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Old 12-04-2008, 12:13 AM   #1
Nov 2008
Posts: 26

Just a few general questions. From my limited experience so far, the blow-off tube seems to work great at reducing the formation of a large krausen ring and foamovers.

Is there any reason why people switch to airlocks at the end of high activity?

Is it fine to just use blow-off tubes for every primary?

Is Starsan good for the sanitizer in the blow-off water?

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Old 12-04-2008, 01:09 AM   #2
Oct 2007
Posts: 22

1. You don't have to worry about the tube sticking out of the primary. Easier to move if need be.
2. Yes.
3. I don't see why not.
Durnbrau Brewery

Primary: Double APA / Soon to be Saison
Secondary: Impatient Russian Stout / Peach Blueberry mead / Schwartz
Keg: APA / Pilz / Bock / DoppleBock / Scotch Ale

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Old 12-04-2008, 01:09 AM   #3
Senior Member
Hammy71's Avatar
Sep 2008
, Maryland, The Tax Me State
Posts: 5,889
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You can just leave the blow off on the whole time...but I switch mine out after the first week (for an airlock) because it makes it easier to move the carboy later....

I've used one everytime just for insurance...seen to many pics on here and youtube videos of what a ceiling looks like after an airlock blows...

I put starsan in my blow-off far never had a problem. I just use some from the batch that I made for sanitizing my brewing equipment when I made the wort...

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Old 12-04-2008, 03:18 AM   #4
Nov 2008
Posts: 26

Thanks! I was a bit concerned when every reference to a blow-off tube was followed by 'switched to airlock' in various threads.

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Old 12-04-2008, 03:40 AM   #5
Orangevango's Avatar
Mar 2008
Posts: 596
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Airlocks are much quieter. My beer lives in my room.

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Old 12-04-2008, 04:07 AM   #6
Fat Guy Brewing
Jun 2008
Kansas City Metro
Posts: 203
Liked 1 Times on 1 Posts

I have read some threads where people have a temperature drop and it creates a vacuum in the fermenter causing blow-off water to get sucked back into the fermenter. That can happen towards the end of fermentation when there is less CO2 being blown out. That's a reason to switch to an airlock after the vigorous part of fermentation.
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Brewing: IPA
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