Fermentation lock versus blow off tube - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Fermentation lock versus blow off tube

Reply
 
Thread Tools
Old 11-01-2009, 02:25 PM   #1
buzzbee
Recipes 
 
Dec 2007
Clinton County,PA
Posts: 40
Liked 1 Times on 1 Posts



If i put a five gallon batch in a six gallon carboy,can I just use an air lock or will i need a blowoff tube? Will the extra space give me enough headroom?
If i need a tube,can i adapt the one from my wine racking cane into the airlock stopper instead of a large 1 1/2 inch tube?


http://s93.photobucket.com/albums/l6...lowoff%20tube/

Reason: Added photolink

 
Reply With Quote
Old 11-01-2009, 02:45 PM   #2
StunnedMonkey
 
StunnedMonkey's Avatar
Recipes 
 
Aug 2008
Fort Wayne, IN
Posts: 1,133
Liked 21 Times on 18 Posts


Sure. Just make sure you have a gallon of white ceiling paint handy.

Seriously though, it depends on the beer. With a wheat or some high-gravity beer you're almost guaranteed a blowoff. Even a modest pale ale can can easily exceed that one gallon of head space. Why take the chance? Just use a blowoff untill the krausen starts to fall, then replace with an airlock.

For my blowoff I use a standard 3 piece airlock with the tapered bottom trimmed off (so the gunk can get through) and run a length of tubing from the top of the airlock. (It's either 1/2 in ID or 3/8 in ID, I can't recall.) When the blowoff is done I pull that airlock off and put a fresh one in, no need to remove the stopper.
__________________
Tap 1:Traditional Bock
Tap 2:Robust Porter
Tap 3:California Common
Tap 4:Old Ale
Tap 5:IPA


 
Reply With Quote
Old 11-01-2009, 04:49 PM   #3
buzzbee
Recipes 
 
Dec 2007
Clinton County,PA
Posts: 40
Liked 1 Times on 1 Posts


I added some pics to OP
I think I would rather use the tubing attached to three piece airlock as you suggest or tube adapted to stopper.If I use the first option should I cut the restriction off the bottom of the airlock part? I usually brew wine so it is not an issiue.

 
Reply With Quote
Old 11-01-2009, 04:55 PM   #4
StunnedMonkey
 
StunnedMonkey's Avatar
Recipes 
 
Aug 2008
Fort Wayne, IN
Posts: 1,133
Liked 21 Times on 18 Posts


Quote:
Originally Posted by buzzbee View Post
If I use the first option should I cut the restriction off the bottom of the airlock part? I usually brew wine so it is not an issiue.
I do. Since I don't filter the wort when I transfer to the primary there is a lot of hop matter and break material that gets transferred over. Without snipping the bottom of the airlock there's a real chance it'd end up plugged. Even after snipping it off I worry that it'll get plugged, but so far it never has.

BTW, your first pic is exactly what I do.
__________________
Tap 1:Traditional Bock
Tap 2:Robust Porter
Tap 3:California Common
Tap 4:Old Ale
Tap 5:IPA

 
Reply With Quote
Old 11-01-2009, 05:01 PM   #5
exbrit
Recipes 
 
Aug 2009
Windsor, ON
Posts: 54

I've only done three batches but learned the hard way to start using a blow off every time at least for the first 3-5 days.

I did a hefe that sprayed krausen all over the living room...twice. Never again

 
Reply With Quote
Old 11-01-2009, 06:30 PM   #6
Hammy71
Senior Member
HBT_SUPPORTER.png
 
Hammy71's Avatar
Recipes 
 
Sep 2008
, Maryland, The Tax Me State
Posts: 5,899
Liked 531 Times on 404 Posts


1 1/4" ID tubing at the Depot is like a dollar/something a foot.....Stop by....buy a 3-4 foot piece and never have to worry. ALL of my primaries in the first week get a blow-off tube. I've had some nasty blow-offs...but nothing on the ceiling because of the couple bucks spent....Just MHO....

 
Reply With Quote
Old 11-01-2009, 08:05 PM   #7
buzzbee
Recipes 
 
Dec 2007
Clinton County,PA
Posts: 40
Liked 1 Times on 1 Posts


Once I put on the blow off tube can I put the other end in a gallon jug with the end covered in star san solution or is water better?

Reason: spelling

 
Reply With Quote
Old 11-01-2009, 08:41 PM   #8
StunnedMonkey
 
StunnedMonkey's Avatar
Recipes 
 
Aug 2008
Fort Wayne, IN
Posts: 1,133
Liked 21 Times on 18 Posts


Quote:
Originally Posted by buzzbee View Post
Once I put on the blow off tube can I put the other end in a gallon jug with the end covered in star san solution or is water better?
I use a StarSan solution, or maybe Idophor.
__________________
Tap 1:Traditional Bock
Tap 2:Robust Porter
Tap 3:California Common
Tap 4:Old Ale
Tap 5:IPA

 
Reply With Quote
Old 11-01-2009, 08:47 PM   #9
buzzbee
Recipes 
 
Dec 2007
Clinton County,PA
Posts: 40
Liked 1 Times on 1 Posts


Thanks Stunned Monkey,you've been a big help to a new guy with the jitters today.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Lock vs. Blow Off Tube goswell General Techniques 70 08-23-2011 02:40 PM
Air Lock Vs. blow off tube popscube Beginners Beer Brewing Forum 6 09-18-2009 01:56 AM
Air lock vs blow off tube? JoshuaWhite5522 Beginners Beer Brewing Forum 9 02-05-2009 06:43 PM
fermenation lock instead of blow-by tube....a mess JMO Beginners Beer Brewing Forum 2 01-04-2008 01:48 AM
Why use fermentation lock if you have a blowoff tube? Kensington Beginners Beer Brewing Forum 5 02-28-2007 09:23 PM


Forum Jump