3 gallon batch fermentation in a 8 gallon bucket bad idea? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > 3 gallon batch fermentation in a 8 gallon bucket bad idea?

Thread Tools
Old 03-27-2010, 03:56 PM   #1
Jun 2009
Posts: 10

Can I brew a 3 gallon batch of beer using the BIAG method and ferment in a 8 gallon bucket? I heard this can cause harm to your beer. Any ideas thanks

Reply With Quote
Old 03-27-2010, 04:04 PM   #2

I wouldn't suggest it. You might be alright in primary, but why risk it?
He who drinks beer sleeps well. He who sleeps well cannot sin. He who does not sin goes to heaven.

Another HERMS rig...

Reply With Quote
Old 03-27-2010, 04:38 PM   #3
Aug 2008
Portland OR
Posts: 5,387
Liked 63 Times on 59 Posts

The fermentation will create enough CO2 to protect the beer during fermentation. I've done 6 gallons in a 16 gallon conical without problems but I got the beer into kegs after 10 days. Leaving it too long as previously mentioned adds a level of risk.

Reply With Quote
Old 03-28-2010, 01:55 PM   #4
Aug 2009
Charlottesville, VA
Posts: 2,174
Liked 44 Times on 40 Posts

Yeah, I think you'll be fine so long as you don't let it sit for too long after fermentation finishes. I mean, don't get scared or anything if you have to leave it an extra week or something. Maybe try to get it out 3 weeks after pitching?

Reply With Quote
Old 03-29-2010, 02:14 AM   #5
Nov 2009
Posts: 105

People have mentioned the 'risk', but I don't know what you are risking. As samc stated CO2 is heavier than O2 so it creates a layer of protection from oxidation directly on top of your wort. Sanitation is the other issue, but that has no bearing on the size of your fermenter. I don't think you will have any problems that you wouldn't have in a smaller fermenter.

Good luck!

Reply With Quote
Old 03-30-2010, 05:15 PM   #6
Mar 2009
Beaverton, OR
Posts: 164
Liked 2 Times on 2 Posts

I wouldn't worry about doing this. As previously CO2 is heavier than air and will displace most of the O2 during primary fermentation. For primary fermentation you should be fine but I wouldn't transfer to a secondary.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
1.5 batch in 6.5 gallon bucket effects jermanimal Fermentation & Yeast 2 12-14-2009 02:45 AM
55 gallon drum fermentation idea Pangea Fermenters 8 08-27-2009 01:39 PM
Brewing a 5 gallon batch in a 5 gallon bucket jbolte1976 Beginners Beer Brewing Forum 5 05-26-2009 02:46 AM
5 gallon batch, 6.5 gallon bucket... Sigthor Beginners Beer Brewing Forum 4 03-31-2009 02:03 PM
1 gallon batch= BAD IDEA. BigKahuna Mead Forum 9 06-15-2008 08:57 PM

Forum Jump