Fermenting smaller batches in 5 or 6.5G carboys - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Fermenting smaller batches in 5 or 6.5G carboys

Reply
 
Thread Tools
Old 11-10-2011, 05:02 PM   #1
TheGrouch
Recipes 
 
Jul 2011
Plainfield, IL
Posts: 21


Is there any reason I can't brew a 3 gallon batch and ferment it in a 5 gallon carboy? Or even a 6.5G carboy?

 
Reply With Quote
Old 11-10-2011, 05:05 PM   #2
thood6
 
thood6's Avatar
Recipes 
 
Aug 2011
Baton Rouge, Louisiana
Posts: 557
Liked 19 Times on 16 Posts


THe only reason i can think of is that there may be a higher chance of oxidation.

 
Reply With Quote
Old 11-10-2011, 05:16 PM   #3
eltorrente
Recipes 
 
Aug 2011
baltimore, md
Posts: 495
Liked 64 Times on 46 Posts


There won't be a higher chance of oxidation. There will be a nice layer of co2 above the wort to protect it.

 
Reply With Quote
Old 11-10-2011, 05:19 PM   #4
TheGrouch
Recipes 
 
Jul 2011
Plainfield, IL
Posts: 21

Initially, that was my leading concern. However, the surface area of the wort exposed to air is the same, whether you put 2, 3, 4, or 5 gallons in a 6.5G carboy. So I don't see how the risk of oxidation is any greater than a full batch.

I suppose one could argue that a smaller batch will take longer to produce enough CO2 to cover the surface area of the wort, but how much longer would that be? A few hours at most?

 
Reply With Quote
Old 11-10-2011, 05:38 PM   #5
dcp27
Recipes 
 
Jan 2010
Medford, MA
Posts: 4,125
Liked 125 Times on 121 Posts


Nope, nothing wrong with it. I do it all the time.

 
Reply With Quote
Old 11-10-2011, 05:39 PM   #6
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,921
Liked 3184 Times on 1883 Posts


5 gallon is about the biggest I would go, and have gone, with 2.5 gallon batches. Though I really try normally to have no more than a "gallon" worth of headspace in my fermenters. You can go with 2.5 in a 5 if you have no other options. I wouldn't use a 6 or a 6.5 though.
__________________
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

 
Reply With Quote
Old 11-10-2011, 07:01 PM   #7
TheGrouch
Recipes 
 
Jul 2011
Plainfield, IL
Posts: 21

Revvy - What is the reasoning behind that guidance?

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Smaller batches rilo0407 Beginners Beer Brewing Forum 1 01-09-2011 04:10 PM
smaller batches AnthonV78 Beginners Beer Brewing Forum 3 12-27-2009 03:02 AM
Yeast and fermenting smaller batches Lando Beginners Beer Brewing Forum 1 05-04-2009 02:21 AM
Smaller Batches DieselJohnny Beginners Beer Brewing Forum 7 11-05-2008 12:46 PM
Decided on smaller batches Cregar Beginners Beer Brewing Forum 10 08-18-2006 08:45 PM


Forum Jump