Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > When to use a blow-off tube??
Reply
 
LinkBack Thread Tools
Old 10-18-2009, 08:50 PM   #1
Ernie3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Posts: 162
Liked 1 Times on 1 Posts

Default When to use a blow-off tube??

Just wondering......are there certain beers that you should use a blowoff tube rather than an airlock. I am talking about extract kits like Brewers Best, True Brew etc....
__________________
Ernie3 is offline
 
Reply With Quote Quick reply to this message
Old 10-18-2009, 11:31 PM   #2
SMOKEU
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2009
Location: NZ
Posts: 240
Default

Sometimes. I made a stout using 2X Coopers kits and 1kg of dextrose to make a 23L brew in a 30L fermenter. After 2 days I had foam coming out of the airlock, and lots of it so in that case an blow off tube would have been a good idea.

__________________
SMOKEU is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 01:15 AM   #3
Hang Glider
Beer Drinker
HBT_SUPPORTER.png
Feedback Score: 1 reviews
 
Hang Glider's Avatar
Recipes 
 
Join Date: Mar 2007
Location: North Augusta, SC
Posts: 3,160
Liked 149 Times on 119 Posts
Likes Given: 102

Default

I always use a blow-off tube for the first 3-4 days. Sometimes I'm glad I did, other times, it wouldn't have mattered. But cleaning out an airlock is no fun - so I recommend err on the side of expecting one.

Temp can have a large impact, as well; if you ferment hot, you'll get a more vigorous initial result. Keep your temps on the low side of the recommended range for your yeast, and you'll see fewer blow-offs.

__________________
Hang Glider is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 01:21 AM   #4
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 62,905
Liked 4951 Times on 3587 Posts
Likes Given: 1002

Default

I've used one blow off tube, I believe. I think it was about three years ago.

I use a 7.5 gallon bucket for primary (almost always), so I have plenty of headspace for a 5.25 gallon batch. I also always ferment on the cool side of the yeast strain's optimum temperature, so I rarely get super vigorous fermentations. Even using a pacman starter last week, my IIPA (OG 1.072) is fermenting at 60 degrees and there isn't any krausen peeking out.

I know that a warmer fermentation can have explosive results, as can using a big percentage of wheat. I also think that some people don't use a large enough fermenter to give them enough headspace. If any of those things are happening, then a blow-off tube is probably a good idea!

__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

Find me on facebook: Lorena Evans
But I'm pretty boring so don't expect much!
https://www.facebook.com/lorena.t.evans
Yooper is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 01:34 AM   #5
pretzelb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2009
Location: Texas
Posts: 486
Liked 1 Times on 1 Posts

Default

I would say always. Unless you are a real pro and can predict exactly what will happen it seems like it's always possible and cleaning up after it blows isn't fun.

__________________
pretzelb is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 02:10 PM   #6
Ernie3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Posts: 162
Liked 1 Times on 1 Posts

Default

Thanks guys.

__________________
Ernie3 is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 02:31 PM   #7
johnnyc
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: North Atlanta, GA
Posts: 688
Liked 9 Times on 7 Posts

Default

Lately I've used one on every batch. Since I don't move the carboy around any its not a big deal to leave it connected until I rack to secondary. That's when I switch to an airlock. Better safe than sorry. Then again I make a 2L starter on a stirplate whenever using liquid yeast which can get out of control if the temp isn't monitored.

__________________

Kegged: Hoppy Amber, ESB, Weizenbock, Breakfast Stout, IPA

Fermenting: Yooper's Oktoberfest

johnnyc is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 03:21 PM   #8
Richabt
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2009
Location: Tallahassee, FL
Posts: 442
Liked 4 Times on 4 Posts
Likes Given: 1

Default

I have started using a blow off exclusively for the first few days for both my carboy and fermenting bucket. I've only had one "explosion", with an air lock, but that was enough for me to see the light. I always go to an airlock for secondary.

__________________
On Deck:
Primary: Hefe
On Tap: Backporch IPA, Rosemary Pale Ale
Richabt is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 03:41 PM   #9
Buffman
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2009
Location: Aurora, Colorado
Posts: 431
Liked 1 Times on 1 Posts

Default

+1 on always. Yeast, being living beings, are unpredictable. I've had brews blow that I thought wouldn't, and quiet fermentations on predicably active ones. Another option is a few drops of Fermcap. I haven't tried it, but hear it works to keep the krausen under control.

__________________
Buffman is offline
 
Reply With Quote Quick reply to this message
Old 10-19-2009, 03:51 PM   #10
azscoob
Here's the Beers!
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
azscoob's Avatar
Recipes 
 
Join Date: Jun 2009
Location: Lake in the Hills, IL
Posts: 7,234
Liked 156 Times on 133 Posts
Likes Given: 144

Default

I have switched to a blowoff tube as well, mostly for ease of cleanup and sanitizing. It is much easier to clean and sanitize a big honkin hose than a bunch of plastic bits and the bung from an airlock. Also fewer parts to sanitize means less chance of an infection as well

__________________

Shirts n Steins: Grain Reaper Brewing

azscoob is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Blow off tube, how much?? jrodincincy Beginners Beer Brewing Forum 4 02-04-2009 06:40 PM
Blow off tube ? Chris_Dog General Beer Discussion 10 12-23-2007 12:39 AM
Blow off tube ArroganceFan General Techniques 17 08-03-2007 03:41 AM
Blow off tube skradleybrew Beginners Beer Brewing Forum 6 01-12-2007 04:24 PM
Blow-off tube came out nitro4040 General Techniques 3 09-13-2006 04:49 AM



Newest Threads

LATEST SPONSOR DEALS