Anyone trying part-open fermentation?

[benda86]

This is the first one... Though it's not an article.. https://youtu.be/X9xT8DHOZFE

I will happily find some more.. The co2 blanket is also covered (to some extent) in that video. So.. That not just me telling you about it.
Enjoy!

 

[Nerosync]

This is the first one... Though it's not an article.. https://youtu.be/X9xT8DHOZFE

I will happily find some more.. The co2 blanket is also covered (to some extent) in that video. So.. That not just me telling you about it.
Enjoy!

Awesome information! Thanks for the link

 

[rhys333]

Good news is you're both right:
http://beerandwinejournal.com/can-co2-form-a-blanket/

 

[joshesmusica]

"In an open fermentation, especially one in which the level of liquid is well below the upper lip of the container, the pressure of carbon dioxide gas leaving the solution will lower the amount of oxygen reaching the surface, compared to if the liquid was not fermenting."
Key words:
Well below.
Will lower the amount.
Compared to if it wasn't fermenting.
So maybe if you're generous then you could call 5 gallons well bellow the lid of a six gallon bucket?
And then if it's well below, then the amount of oxygen will be reduced, not blanketed away.
Then you can only compare that number to the amount of oxygen reaching it if it wasn't fermenting.
That's a lot of conditions to consider in order to get a semi-blanket.
So again, no such thing as a co2 blanket keeping stuff out. The co2 the escapes joins the adjacent air, it's just that co2 continually escapes, and that helps.

 

[benda86]

Well.. have you ever brewed using the open fermentation method? If not (which is probably so) you should try this first. And after that be my guest, and try to convince me why my beer is not inhabited with mold and fungee. Indeed the krausen forms a barrier to the unwanteds.. But after the 24 hours to the procces, I skimmed off the krausen and the beer was exposed to bactirias and such.
So... I there is no krausen to help, and the co2 don't help also.. Than how can you explain the fact that the beer did NOT got infected?

 

[joshesmusica]

i think you're misunderstanding my point. i even said at one point that i have no problem with open fermentation and do plan to try it. i do believe the krausen and the output of co2 help to keep the unwanteds out, and i never claimed otherwise. i simply took up issue with the co2 blanket.