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Old 11-15-2012, 09:20 PM   #1
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Default Possible infection - but what is it?

I've been brewing for a few years and haven't had an infected batch yet. I did a low gravity (1.040 or so) mead which was fermented in a covered bucket with SA-05 and WLP720. It is down to 1.004.

I'm seeing a pellicle of some kind on the mead's surface. Does anyone recognize what this might be?

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Old 11-15-2012, 10:37 PM   #2
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Any off smell? I would suggest racking it off and making sure to leave that cake of jelly looking stuff out. Crushing the appropriate amount of campden for the size and keep an eye on it. Hopefully it's an isolated issue and it won't come back

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Old 11-16-2012, 04:11 AM   #3
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When did you start this and when did you notice the film?

What were the ingredients and additives in this batch? And did you use fresh or washed yeast? Do you have vinegar in the proximity?

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Old 11-16-2012, 04:13 AM   #4
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Noticed yesterday.

Ingredients were spring water, honey, and yeast. All yeast fresh from the vial/packet,

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Old 11-16-2012, 04:17 AM   #5
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Definitely rack to carboy and apply airlock, be sure to dose with Campden or k-meta. How does it taste/smell?

Let me know after you remove the film how it feels. Firm, rubbery or splits apart like mucous, etc.

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Old 11-16-2012, 04:20 AM   #6
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Wasn't able to feel; broke apart too easily.


I think it was acetobacter, as the mead is lightly tart, reminiscent of a Berliner weisse. I threw in some potassium metabisulphate, as I had it on hand. I can grab something else tomorrow if that would work better.

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