3 gallons in a 5 gallon carboy? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > 3 gallons in a 5 gallon carboy?

Thread Tools
Old 12-04-2012, 05:37 AM   #1
Nov 2012
Posts: 422
Liked 19 Times on 19 Posts

I've got a 5 gallon better bottle, and was thinking of doing a smaller, 3 gallon biab ag batch on my stove (apartment living means no garage or yard to do full ag batches)... I know too much head space in secondary could cause issues, but i'm assuming that if I use the 5 gallon bb as a primary, that would be filled with co2,and not cause issues?
Primary: None
Bottled: Cinnamon Apple Cider, Two Hearted Clone, FW Double Jack Clone
Kegged: House Pale Ale, Russian Imperial Stout, Milk Chocolate Stout/Porter Partigyle, Graff
On Deck: DIPA w/Heady Topper Yeast, Winter Warmer, Imperial Red

Reply With Quote
Old 12-04-2012, 05:41 AM   #2
Jul 2012
Nelson, Bc
Posts: 537
Liked 49 Times on 39 Posts

I worry about what is in the headspace before the CO2, and never getting it all out. I might try inverting the bottle, flushing it with CO2 while it's upside down, and then carefully racking the brew into it. Still, I'm kind of paranoid about airborne microbes.

Reply With Quote
Old 12-04-2012, 11:17 AM   #3
Calichusetts's Avatar
Nov 2011
Plymouth, MA
Posts: 3,017
Liked 505 Times on 303 Posts

My advice (if you want to secondary) is to do a 3.25-3.5 batch and get yourself a 3 gallon carboy. That way, you will completely fill the secondary and not have to worry about headspace. Hope this helps

Reply With Quote
Old 12-04-2012, 11:20 AM   #4
Sep 2011
!, !
Posts: 1,288
Liked 84 Times on 77 Posts

Yes you can use a 5 gallon BB for a primary on a 3 gallon batch,no problems.

Reply With Quote
Old 12-04-2012, 11:26 AM   #5
zzARzz's Avatar
Jul 2012
Posts: 416
Liked 48 Times on 40 Posts

I've done several 3 gallon batches in my 5 gallon carboy without any ill effects. The extra space is especially nice when racking onto fruit and the like.

Reply With Quote
Old 12-04-2012, 11:39 AM   #6
AnOldUR's Avatar
Mar 2007
, New Jersey
Posts: 6,888
Liked 848 Times on 612 Posts

I commonly brew 7-8 gallon batches and split the wort between two 5 gallon carboys.

So, I'm another one saying, no problem.

Reply With Quote
Old 12-04-2012, 12:00 PM   #7
Oct 2010
Astoria, NY
Posts: 357
Liked 24 Times on 17 Posts

I do 3 gal batches in my 5 and 6 gal carboys all the time. Just never secondary in a vessel with that much headspace and you'll be fine.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
2 Gallons in 5 Gallon Carboy hal simmons General Techniques 12 10-26-2016 07:18 PM
3 gallons in a 5 gallon carboy? Kosch Beginners Beer Brewing Forum 3 04-29-2012 12:04 AM
2.5 gallons in 5 gallon carboy petep1980 Fermentation & Yeast 5 08-24-2011 11:19 PM
5 Gallons in 6.5 Gallon Carboy Morkin Beginners Beer Brewing Forum 12 09-01-2009 03:37 PM
7 gallon carboy for 5 gallons batches... SowegaBrews General Techniques 5 03-23-2009 04:03 PM

Forum Jump