5 gallon primary for a 5 gallon batch? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > General Beer Discussion > 5 gallon primary for a 5 gallon batch?

Thread Tools
Old 02-15-2008, 05:33 PM   #1
Jan 2007
Webberville, Michigan
Posts: 37

I am in the market for a new carboy since I lost one to stupidity (thermal shock). I was wondering what people thought about the method of primary fermentation using a five gallon carboy for a five gallon batch. Charlie Papazian suggests this to try in his book "The Complete Joy of Homebrewing"

The theory is that you'll sacrifice some volume for better quality beer because you will blow off tannins and such. I have a blow-off tube so that won't be a problem.
It would seem like there would be some yeast lost with this method, though. Any thoughts? Should I repace my 6.5 gal. or get another 5 gal. variety?

Reply With Quote
Old 02-15-2008, 05:40 PM   #2
Ale's What Cures You!
Yooper's Avatar
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,558
Liked 7922 Times on 5546 Posts

Well, I understand the theory, but I'm not sure I'm willing to buy that. The krausen falls back into the beer and ends up as trub anyway, even if it doesn't blow off. I think that I'd go with the 6.5 gallon to have the headspace, and not risk losing a gallon of beer by not having the headspace.
Broken Leg Brewery
Giving beer a leg to stand on since 2006

Reply With Quote
Old 02-15-2008, 06:17 PM   #3
Maniacally Malty
DeathBrewer's Avatar
Apr 2007
Oakland, CA
Posts: 21,790
Liked 269 Times on 134 Posts

yeah, scooping the krausen or using a blow-off just to get rid of the tannins seems unneccessary. it all just turns to trub anyway. just leave it in the primary long enough for it to settle.
Easy Partial Mash Brewing - Stovetop All-Grain Brewing

"Death is always with us." - Brewpastor

We will remember...

Reply With Quote
Old 02-15-2008, 07:53 PM   #4
Joker's Avatar
Nov 2007
Posts: 1,953
Liked 33 Times on 30 Posts

6.5 gallon bucket is much easier to clean and leave the krausen.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gallon markings for 7 gallon plastic primary fermenter scone Beginners Beer Brewing Forum 13 03-15-2014 07:16 PM
Can I use a 5 gallon glass carboy as a primary for a 2.5 gallon batch bgough All Grain & Partial Mash Brewing 3 03-24-2009 05:41 PM
Smaller batch in 5 gallon primary? ericm General Beer Discussion 2 01-31-2009 06:12 AM
5 gallon batch + 5 gallon primary fermenter = good noisy123 Beginners Beer Brewing Forum 13 07-30-2008 11:45 AM
6 Gallon Primary for 5 Gallon Batch? wup Beginners Beer Brewing Forum 4 07-21-2006 11:41 PM

Forum Jump