The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > best time to swap blowoff tube out for airlock

Reply
 
LinkBack Thread Tools
Old 11-01-2011, 06:59 AM   #11
dcHokie
HBT_SUPPORTER.png
Feedback Score: 1 reviews
 
dcHokie's Avatar
Recipes 
 
Join Date: Mar 2010
Location: Washington, DC
Posts: 1,656
Liked 238 Times on 183 Posts
Likes Given: 172

Default

Quote:
Originally Posted by subliminalurge View Post
I ferment 5 gallon batches in 6.5 gallon carboys. Been doing so for 6 years. Probably a couple hundred batches.

Never used a "blow off", just use an airlock every time. In that time there has been only one time where the fermentation was so strong that the airlock couldn't handle it and the stopper got blown out of the carboy. And on that occasion I just squirted it down with star san, stuck it back in, and the beer came out fine.

Blow offs are a waste. Only the paranoid people use them. There's really no need. Airlocks do the job just fine. All you have to do is make sure to use a large enough container for your primary.

IMHO, blow offs are sort of a noob thing. If you hit your gravity right, and have the proper container for a primary, then an airlock is all you really need.

Blow offs are something you use on special occasions, when you're making an extra special, super-high-gravity brew.

You don't have to use them every time.
Technically, 3 piece airlocks, bubblers, and blow-off tubes are all a variation of the same device. A blow-off tube just provides more volume for venting CO2. You could say an airlock is a small blow-off or a blow-off is a large airlock.

There are a lot of variables that can affect fermentation from brewery to brewery: yeast strain, yeast pitch rates, beer style, gravity, aeration, your water, your local altitude, using fermcap, etc. I'd guess that most folks that have brewed enough wheat beers or imperial stouts have had a blow-off, near miss, or a yeasty krausen bubble over/out. Whereas someone that brews session beers or uses mostly english yeasts, maybe never has.

Personally, I get vigorous enough ferments that I need a blow-off every third batch or so using 6.5 carboys.

For doublehaul, as others have said, you can leave the tube on until the end of ferment or remove it once you are certain you aren't going to blowoff and replace with airlock.
__________________

Aging: Sour Solera, Flemish Gold, Repas du Matin Sour Table Beer, Flanders Red, Anejo Rum Sour, Brett Brown, Sour blonde, Funky Barleywine Barrel, Sour Rye Whiskey Barrel
Bottled: Cherry Oud Bruin, Le Batard Solera, Sour Stout, Wild Ale, Brett Belgian Rye Stout, Berliner Weisse, FlandersPale, Brett Old Ale, Funky Fig Saison, Mango BGSA, Rapture RIS, Brett Saison
dcHokie is online now
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 07:17 AM   #12
Soperbrew
Who rated my beer?
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Soperbrew's Avatar
Recipes 
 
Join Date: Feb 2008
Location: Chandler, Arizona
Posts: 2,582
Liked 63 Times on 62 Posts
Likes Given: 10

Default

Quote:
Originally Posted by ozzy1038 View Post
I leave mine on the whole time.
This is what I do usually.
Soperbrew is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 11:11 AM   #13
unionrdr
Wannabe author
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
unionrdr's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Sheffield, Ohio
Posts: 27,792
Liked 1826 Times on 1609 Posts
Likes Given: 1295

Default

I wait till initial fermentation slows enough where it takes a while for the tube to make a bubble,Then remove the dirty tube &toss on a clean,sanitized airlock. I use a cooper's micro brew FV,at some 7.5G,& a BB ale pale at some 6.5G. And need a blow off some 8 times out of ten. Re-hydrate yeast,or use a starter,& you'll need a blow off. Nothing noob or paranoid about krausen & big chili & beer fueled dinosaur farts in the blow off jug. For our 2 current ales,we went through 3 blow off jugs. & that was only using a 3/8" tube. Quite a bit of krausen blew out of them with all those beer soaked yeast farts.
__________________
Everything works if ya let it-Roady(meatloaf)
My new book is on Amazon Kindle! http://www.amazon.com/dp/B00L3MCU0W
unionrdr is offline
bricks Likes This 
Reply With Quote Quick reply to this message
Old 11-01-2011, 11:19 AM   #14
danorocks17
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: Indianapolis, Indiana
Posts: 929
Liked 42 Times on 33 Posts
Likes Given: 66

Default

Quote:
Originally Posted by subliminalurge View Post
I ferment 5 gallon batches in 6.5 gallon carboys. Been doing so for 6 years. Probably a couple hundred batches.

Never used a "blow off", just use an airlock every time. In that time there has been only one time where the fermentation was so strong that the airlock couldn't handle it and the stopper got blown out of the carboy. And on that occasion I just squirted it down with star san, stuck it back in, and the beer came out fine.

Blow offs are a waste. Only the paranoid people use them. There's really no need. Airlocks do the job just fine. All you have to do is make sure to use a large enough container for your primary.

IMHO, blow offs are sort of a noob thing. If you hit your gravity right, and have the proper container for a primary, then an airlock is all you really need.

Blow offs are something you use on special occasions, when you're making an extra special, super-high-gravity brew.

You don't have to use them every time.
This is the worst advice I've seen on this forum. This seems like borderline trolling!

edit: forgot to answer the OPs question. I always rig a blowoff. sometimes I need it, sometimes I don't, but I never have to worry about krausen all over my kitchen. I usually leave the blowoff in for at least 10 days, then replace it with your standard airlock.
__________________
Burning Fence Brewery

"blessing of your heart, you brew a good ale"
danorocks17 is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 11:34 AM   #15
unionrdr
Wannabe author
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
unionrdr's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Sheffield, Ohio
Posts: 27,792
Liked 1826 Times on 1609 Posts
Likes Given: 1295

Default

For me,initial fermentation blow off time is typically 3 or 4 days. When that slows,down,dirty blow off rig goes into sink & PBW.
__________________
Everything works if ya let it-Roady(meatloaf)
My new book is on Amazon Kindle! http://www.amazon.com/dp/B00L3MCU0W
unionrdr is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 02:07 PM   #16
runningweird
HBT_SUPPORTER.png
Feedback Score: 1 reviews
 
runningweird's Avatar
Recipes 
 
Join Date: Dec 2009
Location: State Line, PA, Pennsylvania
Posts: 2,087
Liked 85 Times on 62 Posts
Likes Given: 47

Default

one bit of advice: do not leave the blow off tube in during a cold crash - I did that with a saison and it sucked all the water from the blow off tube vessel into the carboy. a sad and cringe worthy day.

__________________

My 6 Tap Long Draw Tower Build:
http://www.homebrewtalk.com/f35/long...-tower-271578/

runningweird is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 02:09 PM   #17
bottlebomber
Feedback Score: 4 reviews
Recipes 
 
Join Date: Apr 2011
Location: ukiah, CA
Posts: 14,246
Liked 2640 Times on 2068 Posts
Likes Given: 290

Default

Quote:
Originally Posted by runningweird
one bit of advice: do not leave the blow off tube in during a cold crash - I did that with a saison and it sucked all the water from the blow off tube vessel into the carboy. a sad and cringe worthy day.
Why would it not do the same with an airlock?
__________________
bottlebomber is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 02:11 PM   #18
BrewKnurd
Formerly discnjh
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
BrewKnurd's Avatar
Recipes 
 
Join Date: Mar 2011
Location: Prairieville, LA
Posts: 2,742
Liked 236 Times on 196 Posts
Likes Given: 111

Default

Quote:
Originally Posted by bottlebomber View Post
Why would it not do the same with an airlock?
Because when an airlock goes into reverse, you're still basically pulling gas into the outlet past a liquid barrier. In a blowoff tube with the end in liquid, you don't have air coming in the outlet, you have liquid.

Although certainly you could pull the airlock liquid into the carboy under the right circumstances. Would definitely be less liquid, tho.
__________________

Fake it til you make it.

BrewKnurd is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 02:20 PM   #19
unionrdr
Wannabe author
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
unionrdr's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Sheffield, Ohio
Posts: 27,792
Liked 1826 Times on 1609 Posts
Likes Given: 1295

Default

...or vodka,as the case may be.
__________________
Everything works if ya let it-Roady(meatloaf)
My new book is on Amazon Kindle! http://www.amazon.com/dp/B00L3MCU0W
unionrdr is offline
 
Reply With Quote Quick reply to this message
Old 11-01-2011, 02:30 PM   #20
roofpig
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Rochester, NY
Posts: 34
Liked 1 Times on 1 Posts

Default

I brewed for the first time in forever and I'm ENJOYING hearing the bloop-bloop of my blow off tube. It says, "You didn't screw up (yet)!" ;-)

__________________

Beer is good, beer is good, beer is good... and stuff!

roofpig 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
Got my blowoff tube on just in the nick of time Thehopguy Beginners Beer Brewing Forum 7 09-17-2011 04:41 PM
Airlock vs. Blowoff tube? jajabee Beginners Beer Brewing Forum 7 04-07-2009 02:57 PM
Sealing a Better Bottle and Airlock vs. Blowoff Tube Boston Brewer Beginners Beer Brewing Forum 8 10-19-2007 10:37 AM
Do I need a blowoff tube? iggy_fenton Beginners Beer Brewing Forum 3 07-26-2006 12:46 AM
Blowoff tube or airlock? mayday1019 Beginners Beer Brewing Forum 5 03-25-2006 03:11 PM