cdubbaya
Well-Known Member
I have a question that I think I know the answer to, but who better to tell me I'm right or wrong than the best homebrew community on the interwebs?
So recently, we bought a stainless conical to serve as both a primary and secondary fermentation vessel. Previously, we've used buckets and carboys (both plastic and glass).
I've noticed that in our conical, fermentation takes much longer, sometimes an extra week or two for primary.
With the same amount of yeast, we've noticed our primary schedule for a light ale is:
- Plastic Bucket: 7-10 days
- Glass Carboy: 14 days
- Conical 14-21 days (dumping yeast every 4-5 days)
My guess is the length of fermentation has to do with Oxygen Permeation in each vessel?
Obviously the plastic bucket allows a bit of oxygen in, which would make the yeast move a bit faster through the sugars. The conical, on the other hand, is completely air tight, so after the initial 2-3 days of fermentation, CO2 would be the only gas left in the vessel.
Note - we do oxygenate the wort as it goes into the fermentation vessel, but I'm specifically referring to the time it takes for primary fermentation to end.
Any thoughts? Am I thinking about this too much?
So recently, we bought a stainless conical to serve as both a primary and secondary fermentation vessel. Previously, we've used buckets and carboys (both plastic and glass).
I've noticed that in our conical, fermentation takes much longer, sometimes an extra week or two for primary.
With the same amount of yeast, we've noticed our primary schedule for a light ale is:
- Plastic Bucket: 7-10 days
- Glass Carboy: 14 days
- Conical 14-21 days (dumping yeast every 4-5 days)
My guess is the length of fermentation has to do with Oxygen Permeation in each vessel?
Obviously the plastic bucket allows a bit of oxygen in, which would make the yeast move a bit faster through the sugars. The conical, on the other hand, is completely air tight, so after the initial 2-3 days of fermentation, CO2 would be the only gas left in the vessel.
Note - we do oxygenate the wort as it goes into the fermentation vessel, but I'm specifically referring to the time it takes for primary fermentation to end.
Any thoughts? Am I thinking about this too much?