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Old 04-08-2014, 08:56 PM   #1
All Grain supports the Brain
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Jan 2014
Waco, Texas
Posts: 192
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I have a 2L flask that I make my starters out of. I've made quite a few 1.5L and even one other 2L in that. Never with a problem. Well I did a 2L with WLP001 and the krausen was intense. I kept a good eye on it to ensure the foil didn't come off and it get contaminated. But just wondering, when there is a Krausen overflow, is there a loss of yeast, or is that just excess?

Lesson learned... use bigger flask for 2L.
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Old 04-09-2014, 12:50 PM   #2
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Aug 2011
Gainesville, FL
Posts: 1,370
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Yeah a 2L starter in a 2L flask is pushing it. At that volume, the flask is fairly narrow and easily foams up, sometimes making a mess as the krausen exits the flask. It's happened to me several times.

You likely lost a small amount of yeast with the krausen, but nothing I would worry about.

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