Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > General Techniques > What about fermenting 3 gal batches in 5 gal carboys?
Reply
 
LinkBack Thread Tools
Old 01-29-2013, 02:57 AM   #1
Odinperez
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 21
Likes Given: 1

Default What about fermenting 3 gal batches in 5 gal carboys?

I would like to know your opinion about what could go wrong in fermenting 3 gal batches of beer in 5 gal carboys. I'm intending to do this because I don't want the krausen to get out of the air lock and all that kind of problems I have had sometimes when there's a lot of krausen forming, I know this is depending on the style, but with stouts I have allways had this problem.

Thank you!

__________________
Odinperez is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 03:02 AM   #2
lowtones84
Feedback Score: 1 reviews
Recipes 
 
Join Date: Oct 2011
Location: Montclair, New Jersey
Posts: 1,131
Liked 72 Times on 64 Posts
Likes Given: 193

Default

I've fermented 3 gallon batches in 7.5 gallon buckets as well as a 6.5 gallon carboy. It was only primary though and I tried to keep it fairly short (2-3 weeks). So far I haven't noticed any problems despite the massive head space.

__________________
lowtones84 is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 03:04 AM   #3
gbx
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Vancouver, British Columbia
Posts: 637
Liked 76 Times on 61 Posts
Likes Given: 2

Default

I split most of my 5gal batches between 2 6gal better bottle carboys. It works awesome.

__________________
gbx is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 04:40 AM   #4
Gavagai
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2010
Location: Lincoln, Massachusetts
Posts: 174
Liked 5 Times on 5 Posts
Likes Given: 3

Default

1. Do it. Lots of headspace is no problem in primary.
2. Your only concern is krausen? Have you heard of a blow off tube?

Gavagai is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 11:59 AM   #5
Grantman1
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2010
Location: Raleigh, NC
Posts: 353
Liked 35 Times on 19 Posts
Likes Given: 14

Default

I ferment 3 gal batches in a five gal carboy all the time, and never had any krausen close to the top. But if you're still worried, you could use a blow off like the post above mentioned.

__________________
Grantman1 is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 01:22 PM   #6
Odinperez
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 21
Likes Given: 1

Default

Thank you all for sharing your experiences. This information is very useful to me!

__________________
Odinperez is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2013, 02:01 PM   #7
Calichusetts
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Calichusetts's Avatar
Recipes 
 
Join Date: Nov 2011
Location: Plymouth, MA
Posts: 2,452
Liked 256 Times on 178 Posts
Likes Given: 691

Default

Better yet...brew 3.5 gallon batches in a 5 gallon carboy. If you need to secondary (fruit, oak, dry hop, etc) you can get a 3 gallon carboy and completely fill it, no worries of headspace and oxygen

__________________
Calichusetts is offline
 
Reply With Quote Quick reply to this message
Old 02-01-2013, 02:12 PM   #8
bobbrews
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Sierra, Nevada
Posts: 3,535
Liked 283 Times on 243 Posts
Likes Given: 18

Default

Excess headspace in the primary is a non-issue... in fact, there may be some added benefits, one of which includes a thicker/denser 02 blanket to protect the beer. Excess headspace in the secondary however is certainly an issue.

__________________
bobbrews is offline
 
Reply With Quote Quick reply to this message
Old 02-01-2013, 02:17 PM   #9
Hopper5000
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Location: Oakland, CA
Posts: 1,054
Liked 56 Times on 46 Posts
Likes Given: 48

Default

I've done it plenty of times with no issues (im doing 3.75 gal). Only tricky part is getting a gravity reading/sample as my theif is barely long enough.

__________________
Hopper5000 is offline
 
Reply With Quote Quick reply to this message
Old 02-01-2013, 05:07 PM   #10
brewfreeordie
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: manchester, nh
Posts: 83
Liked 8 Times on 8 Posts
Likes Given: 19

Default

I could see it being a problem in the secondary if the batch is pretty much fermented out, but there's so much CO2 being pushed out the airlock it must be completely blanketing the wort. I could see if you move your containers around a lot, but if you don't invade the space I don't see a problem.

__________________
brewfreeordie 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
2x 4g batches for 5g carboys?? OkashiiBrew Beginners Beer Brewing Forum 5 04-09-2012 11:33 PM
Fermenting smaller batches in 5 or 6.5G carboys TheGrouch Beginners Beer Brewing Forum 6 11-10-2011 06:01 PM
3 batches, 2 carboys Slipgate Wine Making Forum 5 12-22-2009 12:06 AM
6.5 gallon carboys for secondary w/ 5 gal. batches gubby Fermentation & Yeast 8 10-22-2009 03:39 PM
Help! White 'stuff' on top of fermenting batches in carboys? kiarrith General Techniques 4 06-14-2008 05:14 PM