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Old 06-25-2012, 11:04 PM   #1
Aug 2008
Norfolk, Virginia
Posts: 13

I'm asking for anyone to share their thoughts/advice for a closed fermentation experiment I've had on my mind.

I have a summer home on a lake - a lake with a fairly stable temperature range - and I want to brew a true bottom-fermenting brew fermented ...at the bottom of the lake. The trick is that I'll have to seal the fermenting vessel (a sanke keg) to prevent lake water from contaminating the brew. UNLESS anyone can suggest a simple method for allowing fermentation gasses to escape but still keeping lake water out.

The style is yet to be determined, but I know other brewers on the lake and hope to have each of us contribute 5gal to the experiment before sinking the keg for a few weeks.

I hope this inspires some fun ideas!

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Old 06-26-2012, 12:39 AM   #2
Sulli's Avatar
Mar 2008
Salt Lake City, Utah
Posts: 395
Liked 35 Times on 18 Posts

Do you know what the temps are at the bottom of the lake?

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Old 06-26-2012, 01:16 AM   #3
Nov 2011
denver, co
Posts: 212
Liked 7 Times on 6 Posts

My first thought when I read this was that you might want to think about adding a buffer to the wort - all that CO2 remaining in the headspace and in the wort might lower the pH more than your yeast can tolerate.

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Old 06-26-2012, 01:29 AM   #4
E-Mursed's Avatar
May 2011
Westland, MI
Posts: 881
Liked 112 Times on 65 Posts

Spunding Valve
Schöne Blondine Brauerei
Closed-System Pressurized Fermentation - the future of homebrewing today...!!!

“Simplicity is the ultimate sophistication” – Leonardo da Vinci
"A set back is the opportunity to begin again more intelligently" - Henry Ford

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