Coldbreak Brewing HERMS Giveaway!

HomeBrewSupply AMCYL Brew Kettle Giveaway!


Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > created a vacuum in carboy?
Reply
 
Thread Tools
Old 10-23-2010, 06:25 PM   #1
Zeppman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: chicago
Posts: 358
Liked 6 Times on 5 Posts
Likes Given: 4

Default created a vacuum in carboy?

So I was just about to keg my fat tire clone which has been in the primary for 3 weeks. I go to check on it, and somehow it had managed to suck water through the blow off tube and into the carboy!? I have never heard of this happening. It literally sucked nearly half a gallon of water with iodophor in it through the blow off tube! I fear my beer is ruined...

Does anyone know how this could of happened?


Zeppman is offline
 
Reply With Quote
Old 10-23-2010, 06:29 PM   #2
AZ_IPA
PKU
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
AZ_IPA's Avatar
Recipes 
 
Join Date: Jun 2008
Location: The Cold Part of AZ
Posts: 46,793
Liked 6961 Times on 5892 Posts
Likes Given: 1131

Default

temperature changes can cause suck back....

what was in your blow off jug? plain water? star san solution?


AZ_IPA is offline
 
Reply With Quote
Old 10-23-2010, 06:31 PM   #3
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Revvy's Avatar
Recipes 
 
Join Date: Dec 2007
Location: "Detroitish" Michigan
Posts: 40,812
Liked 2873 Times on 1699 Posts
Likes Given: 3511

Default

Suckback happens all the time, usually in betterbottles. But a change in temp will often draw the liquid in the airlock (or blowoff vessel) into the fermenter. What did you use as your blowoff liquid.

I wouldn't panic and just see the beer through to finish. It is really a lot hardier than most brewers think, and manages to turn out OK despite what happens to it.

Read this, http://www.homebrewtalk.com/f39/what...t-great-96780/


Relax!
__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew
Revvy is offline
 
Reply With Quote
Old 10-23-2010, 06:33 PM   #4
Zeppman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: chicago
Posts: 358
Liked 6 Times on 5 Posts
Likes Given: 4

Default

The "blow off liquid" was water and iodophor. I know we soak our equipment in this stuff but is it safe to actually drink?
Zeppman is offline
 
Reply With Quote
Old 10-24-2010, 03:16 AM   #5
telebrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2007
Location: Planet Neptune / San Diego
Posts: 109
Default

If the cause of this is temp change, which way? I usually have my temp set at 72 until fermentation begins, then lower it to 67 until it's done. IPA's

What is the actual cause of this. I've never had it happen, but have heard of it. Just so I can avoid it.
telebrewer is offline
 
Reply With Quote
Old 10-24-2010, 03:36 PM   #6
COLObrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: Pea Green, Colorado
Posts: 2,939
Liked 59 Times on 52 Posts
Likes Given: 4

Default

Quote:
Originally Posted by telebrewer View Post
If the cause of this is temp change, which way? . . . . . .
When the temperature drops and there is no co2 release. In this case I use a longer blowoff tube and coil it a couple of times between the fermentor and the blowoff, call it an anti-suckback tube.




Quote:
Originally Posted by telebrewer View Post
What is the actual cause of this. . . . .
Contraction of the beer due to the lowered temperature. I.E. When lagering or chill crashing or just general uncontrolled temperature swings after primary fermentation is at or near completion.
__________________
Newer, better, more streamlined sig as per the forum police.
COLObrewer is offline
 
Reply With Quote
Old 10-25-2010, 04:44 AM   #7
bwomp313
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2009
Location: Kingston, NY
Posts: 1,198
Liked 29 Times on 22 Posts
Likes Given: 28

Default

You should market that COLObrewer, hehehe. I love the drawing
bwomp313 is offline
 
Reply With Quote
Old 10-25-2010, 05:35 AM   #8
GillandCo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2010
Location: CA
Posts: 440
Liked 3 Times on 3 Posts

Default

Quote:
Originally Posted by bwomp313 View Post
You should market that COLObrewer, hehehe. I love the drawing
Agreed, drawing is classic...you could place an add on the site. When people order you simply send them the diagram explaining how to twist and coil the tube. Im sure Billy Mays would have been all over this. Cheers
__________________
If you don't like it...We don't Care!
GillandCo is offline
 
Reply With Quote
Old 10-25-2010, 05:47 AM   #9
bolts
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2009
Location: Portland, OR
Posts: 306
Liked 8 Times on 7 Posts
Likes Given: 3

Default

I've learned the hard way, but only with a little bit of starsan in an airlock, vs a blowoff bucket. When I crash cool, I just empty the airlock out and wrap it tightly in foil.

My random thought of the day:

Capture the CO2 on the way out in an inverted 2 liter bottle, in your normal blowoff bucket. When you finally crash cool the primary it will suck back in CO2 instead of liquid. I would think the blowoff tube needs to go to the top of the inverted bottle that's collecting CO2. Good luck moving this pile of stuff

bolts is offline
 
Reply With Quote
Old 10-25-2010, 08:33 AM   #10
CaptainCoconut
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Bellingham, WA
Posts: 122
Liked 4 Times on 4 Posts
Likes Given: 1

Default

Quote:
Originally Posted by COLObrewer View Post
Quote:
Originally Posted by telebrewer View Post
What is the actual cause of this. . . . .
Contraction of the beer due to the lowered temperature.
It's actually contraction of the air in the headspace.


CaptainCoconut is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fermenting Under Vacuum? DirkDiggler Fermentation & Yeast 1 10-07-2010 09:50 PM
Blow out from my carboy hiphops Fermentation & Yeast 2 09-06-2010 02:02 PM
Someone has been farting in my carboy MrPorter Fermentation & Yeast 7 04-08-2010 01:47 AM
Warming the Carboy PiMaxC Fermentation & Yeast 3 03-07-2010 05:51 PM
Vacuum saved yeast Kickass Fermentation & Yeast 2 08-29-2009 08:46 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS