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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Fermentation complete? Temp dropped during early fermentation.
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Old 05-31-2013, 05:02 PM   #1
devils4ever
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Default Fermentation complete? Temp dropped during early fermentation.

Okay. I got my fermentation chamber up and running and put my Dry Irish Stout in it 3 weeks ago. OG=1.047. Currently, I have a dual stage thermometer running to handle both heating and cooling. However, initially I only could cool.

I had some cold (30's) mornings where the wort temp dropped to around 60 F (or a bit less) after the initial vigorous activity stopped. So, I measured FG=1.017 over about 3-4 days indicating that the yeast is done. This seems high to me. I would expect this to drop to about 1.012. I have the temperature controlled now to be between 70 F and 72 F.

So, did the cold temperatures earlier on stall the yeast? Is this thing done? I've never used a fermentation chamber before although I have decades of experience.


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Old 05-31-2013, 05:08 PM   #2
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Here's the recipe in case this helps.
8 lbs Maris Otter Pale Malt
1 lb Flaked Barley
1 lb Caramel/Crystal Malt 120L
1 lb Roasted Barley
1.3 oz Fuggles (60 min)
1.3 oz EK Goldings (60 min)
1 pkg Wyeast Thames Valley Ale 1275

Mashed 1 hour at 152 F. OG = 1.047.


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Old 06-01-2013, 11:53 AM   #3
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Anyone?
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Old 06-01-2013, 08:08 PM   #4
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Same thing happening to me right now, had a batch drop to 58 for a day and I'm stuck at 1.020, which I was shooting for 1.014.
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Old 06-01-2013, 08:30 PM   #5
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Warm, stir and hope. 58 is definitely cool enough to stall a yeast prematurely. Warmed to 70 and sloshed around a bit should get it going at least a little, hopefully getting you closer to you target FG. Try to find a way to prevent that drop in the future. Swamp cooler/heater, extra fridge with controller, etc....
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Old 06-01-2013, 08:40 PM   #6
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I initially only had the capability to cool. Now, I can heat as well. I have the BB at room temp now. Maybe, I should give it a swirl?
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Old 06-01-2013, 10:45 PM   #7
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Yep, get the yeast back into suspension and they should start eating again...


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