Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > General Techniques > 5 or 6 1/2 gallon for fermenting?

Reply
 
LinkBack Thread Tools
Old 12-29-2007, 06:19 PM   #1
hagen505
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Location: Geneva, Illinois
Posts: 23
Default 5 or 6 1/2 gallon for fermenting?

For fermenting which is better? the 5 gallon which will blow off more of the hop resins and exess yeast during the start of fermentation? or the 6 1/2 gallon which will leave more in the carboy? or does it matter? I am just getting back into beer brewing after a long break, but have accumulated a bunch of 6 1/2's from wine making. thanks...

__________________
hagen505 is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2007, 06:26 PM   #2
BrooZer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2007
Posts: 340
Default

Quote:
Originally Posted by hagen505
For fermenting which is better? the 5 gallon which will blow off more of the hop resins and exess yeast during the start of fermentation? or the 6 1/2 gallon which will leave more in the carboy? or does it matter? I am just getting back into beer brewing after a long break, but have accumulated a bunch of 6 1/2's from wine making. thanks...

I would personally use the 6.5 as my primary because it is good to have the krausen, it protects the beer, versus blowing everything off with a 5 gallon fermenter. I would then use a 5 gallon as my secondary because it leaves less airspace during clearing and would allow you to get rid of the excess resins and trub you speak of.

But thats my preference, try it if you like.
__________________

Life, Liberty, And The Pursuit of Hoppyness

BrooZer is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2007, 06:28 PM   #3
homebrewer_99
Feedback Score: 0 reviews
 
homebrewer_99's Avatar
Recipes 
 
Join Date: Feb 2005
Location: Atkinson (near the Quad Cities), IL
Posts: 17,951
Liked 82 Times on 72 Posts
Likes Given: 1

Default

I brew 5.25-5.5 gals so the carboy is definitely out.

The 6.5 for a primary and 5 gal for the secondary.

__________________
HB Bill
homebrewer_99 is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 12:44 AM   #4
Bugeaterbrewing
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Location: Nebraska
Posts: 206
Liked 1 Times on 1 Posts

Default

As a rule of thumb you want your fermenter to be at least 25% bigger than the wort size to allow for the krausen. Your 6.5's are ideal for 5 gallon batches.

Wayne
Bugeater Brewing Company

__________________
Bugeaterbrewing is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 01:29 AM   #5
hagen505
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Location: Geneva, Illinois
Posts: 23
Default

Thanks, I wasn't sure if it was beneficial to get rid of the initial krausen or trub. I thought that it may contribute to off flavors or hangover contributing resins. Is it still neccesary to use a blowoff hose when using the 6.5? or will the airlock suffice?

__________________

Last edited by hagen505; 12-30-2007 at 01:43 AM.
hagen505 is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 03:45 PM   #6
Jamo99
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2007
Location: It's Always Sunny
Posts: 465
Liked 2 Times on 2 Posts

Default

It depends on the brew. The majority of batches I've done did not need a blowoff tube for the 6 1/2. Of course, a few others have *Definately* needed a blowoff.

__________________
Jamo99 is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 04:56 PM   #7
Ridge Runner
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2007
Location: Florence, KY
Posts: 338
Liked 1 Times on 1 Posts

Default This one does!!

Quote:
Originally Posted by Jamo99
It depends on the brew. The majority of batches I've done did not need a blowoff tube for the 6 1/2. Of course, a few others have *Definately* needed a blowoff.

My porter about 14hrs after pitching. 5.5gal in a 6.5 gal carboy.



I'm trying the plastic wrap and rubber band since I don't have a blowoff hose.

__________________

Last edited by Ridge Runner; 12-30-2007 at 05:01 PM.
Ridge Runner is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 05:01 PM   #8
Bugeaterbrewing
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Location: Nebraska
Posts: 206
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by hagen505
Thanks, I wasn't sure if it was beneficial to get rid of the initial krausen or trub. I thought that it may contribute to off flavors or hangover contributing resins. Is it still neccesary to use a blowoff hose when using the 6.5? or will the airlock suffice?

You won't get any off flavors from the krausen unless you leave the beer in primary for 2 or 3 months. The "hangover contributing resins" you are talking about are the fusel alcohols that result from fermenting at too high a temperature, not from anything in the krausen. The krausen contains a lot of yeast that will help in getting your beer down to your target final gravity, so you don't want to skim it off.

Blow off tubes are needed now and then even with the 6.5 gallon fermenter, especially with 1.065+ beers and many wheat beers.

Wayne
Bugeater Brewing Company
__________________
Bugeaterbrewing is offline
 
Reply With Quote Quick reply to this message
Old 12-30-2007, 05:37 PM   #9
bulldogxray
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
bulldogxray's Avatar
Recipes 
 
Join Date: Oct 2007
Location: indianapolis
Posts: 142
Likes Given: 1

Default

Primary 6.5 it keeps from having a blowoff, 5.0 for secondary. less room for o2

__________________
Primary1-Mac and jacks clone
Primary2-Mac and jacks clone
primary3-empty
kegged1-empty
Kegged2 empty
bulldogxray is offline
 
Reply With Quote Quick reply to this message
Old 12-31-2007, 12:38 AM   #10
Gedvondur
Feedback Score: 0 reviews
 
Gedvondur's Avatar
Recipes 
 
Join Date: Feb 2007
Location: Green Bay WI
Posts: 135
Liked 2 Times on 1 Posts
Likes Given: 1

Default

There isn't going to be any O2 anyway. The yeast will blow all of the oxygen out of the carboy regardless of 6.5 or 5 gallon. Co2 will form a layer on top of the beer as soon as the yeast begin.



Gedvondur

__________________

Natural 20 Brewery

Gedvondur 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
fermenting a 10 gallon batch missing link All Grain & Partial Mash Brewing 18 12-22-2012 10:41 PM
Fermenting in a 55 gallon food grade plastic drum Dynachrome DIY Projects 26 12-20-2011 08:23 PM
1 Gallon Glass fermenting jugs. Parker36 Equipment/Sanitation 7 11-15-2008 06:29 AM
Fermenting 10 gallon batch Chris K General Techniques 7 08-05-2008 03:42 AM
Fermenting 6 gallons in a 14 gallon fermenter? Problems? mward Equipment/Sanitation 6 06-25-2007 06:12 PM