Head space primary germentation.

Brewing Processes
1

It’s time to purchase a new fermenter. I brew all grain, 3 gallon batches. I’m looking at getting a 5 gallon Big Mouth bubbler as my primary fermenter. Being that I will have 2 gallons or so of headspace will this cause any issues?

Thanks
Curtdogg.

2

I wouldn’t think so.  I have fermented 3gal in a 5gal container without any issue.  No worries about blow off for sure.

3

That’s my understanding as well. Secondary is where you don’t want heads pace because of oxygen. Correct?

4

Secondary…what’s that?  Does anyone do that anymore?

5

I use one for additions.
Rack on to fruit, spices etc.
Even dry hop.

6

I also bottle all my homebrew. I’m sure most people don’t do that anymore.

7

No worries on the 2 gal of headspace in your primary - the CO2 of fermentation will purge the space. I like ~ 30% headspace in fermenters, to contain the crazy krausen you get with strains like 3787, 3068, etc. FWIW I use 8 gallon wine fermenter buckets for 5.5 gallon batches.

8

Thanks.[emoji106]