Author Topic: When to Stop Fermentation?  (Read 246 times)

Offline tallanwt

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When to Stop Fermentation?
« on: March 03, 2019, 12:28:16 AM »
Made 15gl batch Pale Ale this wk-always add 1 capsule yeast nutrient/5gl, yeast starter was 5pk WLP090 in 4L batch @ 1.040.
Batch OG 1.060 (missed target by 1 pt) pitched @ 71F, 3 days later FG 1.010 no activity noticed for hrs
then 1.5gl trub dump, turned up FV temp from 67F to 73F for upcoming DH, w/in 15-20mins I noticed blowoff bucket bubbling again & continued more frequently, so I put temp back to 67F.
Is there a point when you would cut off fermentation activity?
At this point I'll go a couple more days at best.

Offline Big Monk

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Re: When to Stop Fermentation?
« Reply #1 on: March 03, 2019, 01:00:25 AM »
Made 15gl batch Pale Ale this wk-always add 1 capsule yeast nutrient/5gl, yeast starter was 5pk WLP090 in 4L batch @ 1.040.
Batch OG 1.060 (missed target by 1 pt) pitched @ 71F, 3 days later FG 1.010 no activity noticed for hrs
then 1.5gl trub dump, turned up FV temp from 67F to 73F for upcoming DH, w/in 15-20mins I noticed blowoff bucket bubbling again & continued more frequently, so I put temp back to 67F.
Is there a point when you would cut off fermentation activity?
At this point I'll go a couple more days at best.

Have you measured the gravity again?

14.7 °P to 2.6 °P is around 83% attenuation.
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Offline ynotbrusum

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Re: When to Stop Fermentation?
« Reply #2 on: March 03, 2019, 03:48:09 PM »
Agreed - check the gravity, as the bubbling could simply be off gassing from the temperature change
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