Final gravity/Stuck fermentation on stout?

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vulcan7864

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Alright, so i tried my hand at my first partial mash, and so far im very happy with the results. My OG was 1.039 and I used safale ale s-04 yeast, I have it in my basement fermenting at around 70-73 degrees. I started fermenting on Tuesday night/ or Wednesday morning at like 3 AM, and by 10 AM I was already bubbling away. But now my airlock stopped bubbling, and as far as I can see through my ale pail there is no more krausen. I am worried that i have a stuck fermentation, but I also don't know what to expect my FG to be because I did not follow a recipe... I really wanted to see if I could do it on my own. So my question is, should i be worried I have a stuck fermentation, or would it already be finished, and what should my FG be? And as always, thank you so much in advance for the help.
 

TzeentchPlayer

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The rule of thumb is that a consistent gravity reading for a few days means a complete fermentation. Most stuck fermentation's happen with high gravity beers from what I've read.

What is the gravity of the wort right now? And as always, RDWHAHB. :mug:
 

acuenca

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You won't know until you take a gravity reading.
and...you're going to get a slew of airlock bubbling does not = fermentation posts... with good reason. As the post above suggests, the only way to know for sure is to take a gravity reading and most of us leave our brews alone for 2-3 weeks before taking a gravity reading. Also, 70s for fermentation is a little high. My first brew ever fermented around that and I noticed some fusels and esters for sure... They did die down after 2-3 months though but...
 

C-Rider

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Alright, so i tried my hand at my first partial mash, and so far im very happy with the results. My OG was 1.039 and I used safale ale s-04 yeast, I have it in my basement fermenting at around 70-73 degrees. I started fermenting on Tuesday night/ or Wednesday morning at like 3 AM, and by 10 AM I was already bubbling away. But now my airlock stopped bubbling, and as far as I can see through my ale pail there is no more krausen. I am worried that i have a stuck fermentation, but I also don't know what to expect my FG to be because I did not follow a recipe... I really wanted to see if I could do it on my own. So my question is, should i be worried I have a stuck fermentation, or would it already be finished, and what should my FG be? And as always, thank you so much in advance for the help.
Wow, OG = 39 seems very low for a stout. And 70-73 sounds really high for fermenting. YOu should post recipe and describe what you did.
 

ChillWill

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S04 can handle those temps easy enough.

39 starting gravity is low but not ridiculous. Guinness is only like 4.1% I think.
 
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