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Old 09-10-2012, 05:34 PM   #1
Jan 2012
Posts: 26

I am lagering a Baltic porter right now and it has been at 60degrees (chest freezer with a temp regulator) for 3 weeks now. I have two carboys; a plastic fermentation vessel and a glass one. The plastic one has some mold spores starting to grow.

My gravity isn't where I want it yet, so my question is; is this normal? And should I be concerned that this could possibly contaminate the batch?

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Old 09-10-2012, 05:37 PM   #2
Double_D's Avatar
Feb 2011
Las Vegas, Nevada
Posts: 1,945
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If you post a picture it would be worth a thousand words. But it's probably just a little yeast hanging around.

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Old 09-10-2012, 05:37 PM   #3
aiptasia's Avatar
Jul 2011
Them Scary Woods, FL
Posts: 3,487
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Totally normal. I wouldn't worry unless you have big islands of mold growing on the surface of the beer, and even then you still might be ok. A little mold on the outside of a carboy or in the neck isn't much of a concern.
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Old 09-10-2012, 05:46 PM   #4
Aug 2012
Fort Meade
Posts: 813
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I have that problem with my sauerkraut batches all the time, mold starts growing on the outside of the crocks where it is damp from condensation in the 'keezer'. I usually carefully wipe it off with a piece of paper towel moistened with rubbing alcohol.

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Old 09-11-2012, 07:09 PM   #5
Dec 2011
Tulsa, OK
Posts: 613
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as long as its all sealed up the mold should not get inside. this happens to me when i don't change lids after a blow off. doh!
"If you are a big tree, we are a small axe, ready to cut you down."-Bob Marley

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Old 09-11-2012, 07:21 PM   #6
Jul 2011
Portland, Oregon
Posts: 444
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Better out than in, eh?

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