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-   -   Fermentation started... then just stopped (http://www.homebrewtalk.com/f39/fermentation-started-then-just-stopped-132990/)

gratliff 08-20-2009 02:56 AM

Fermentation started... then just stopped
Brewed my first batch last Saturday (all Malt Amber from a kit). I think that i did everything by the book fine.

I stuck the batch in the basement and within 24 hours, the bubbles started. It bubbled away for about a day and a half. Nothing crazy though, just a steady bubbling. Then it just stopped.

I broke my hygrometer on brew day so I dont have a starting reading. The kit says it should have started around 1.042-1.044 (for now, i'll assume that i was close). The day before yesterday, i took a reading with my new hygrometer, and it read 1.02. I left everything alone and checked again today and the reading is the same. The kit said that the final reading should be 1.010-1.012.

There is a lot of krausen around the inside of my fermenter. It clearly fermented pretty good for a while.
The batch is in my basement at a steady 69 degrees.

What do I do now? Add more yeast? Shake it up? Add :mug:some kind of yeast food? Add some kind of yeast afrodisiac? Bottle it and chase pretzels with it?


android 08-20-2009 03:33 AM

you can try swirling it around a bit to resuspend the yeast and see if they will attenuate more. it's not entirely uncommon for some beers to stall out around 1.020 when starting out... what type of yeast did you use, did you rehydrate/make a starter?

jrkettle 08-20-2009 11:21 AM

Just because it's not bubbling anymore doesn't mean it's not fermenting. Give it some more time. It may drop another couple of points over the next week.

gratliff 08-20-2009 12:13 PM

Yeast for noobs.
The kit contained Muntons Standard Yeast. I did not re-hydrate as the directions didnt call for it (and I'm just learning).

jrkettle 08-20-2009 12:26 PM

Many people use dry yeast without rehydrating. I prefer to rehydrate though. Dried yeast can not control what passes through its cell wall. So toxic materials like hops and high level of sugars that the cell would normally not let through can enter the cell and damage it. By rehydrating, the yeast can reconstitute its cell wall and then can control what passes through it.

Now that being said your beer is probably fine, and not completely done fermenting. Even if it is done 1.020 is not that unheard of for a final gravity and will taste fine.

brewsmity 08-20-2009 12:42 PM

Gratlift, I'm in the same boat as you. I brewed my first batch this Sunday and pitched with Muntons dry (dumped in straight in without re-hydrating). No bubbles Monday AM, but Monday night she was rockin away. Things seemed to slow down quite a bit by Tuesday night and last night she was only perking about 2 bubbles a min.

I haven't taken a gravity reading since putting the batch in the primary. I'm trying to not over think it and also I've been to busy / lazy to Star San my turkey baster and get a sample. Next time I'm going to reserve a small container of the mixed Star San I use on brew night so I don't need to make a new batch to take samples (other posts on the board say you can use a batch for about 1 month).

I will take a reading tonight. If I'm close to my FG I'll rack to the secondary, if not I'll wait and do it this weekend.

This waiting thing is the hardest part...

corvax13 08-20-2009 06:55 PM

Leave the yeast alone. Its doing its thing. Forget about your brew, don't even look at it for at least 2 weeks.

Waiting is indeed one of the hardest parts, but once you are a few batches in, you get a nice pipeline going so you always have something to drink while you wait.

ChshreCat 08-20-2009 07:03 PM

Make sure that your basement isn't having any serious temp swings. If it's dropping under 60 in the night it can cause your yeast to drop out of suspension and go dormant.

IrregularPulse 08-20-2009 07:08 PM

If you still have krausen, it's still going. The Kruasen will fall away. Airlocks are not fermentation meters, they are air vents for CO2. Nothing more.

thedigitale 08-20-2009 07:21 PM


Originally Posted by gratliff (Post 1497119)
I broke my hygrometer on brew day

I promise you... your beer is humid. :D

No visible activity doesn't mean anything. Leave it alone, order a new hydrometer (unless you really need to know the humidity of your beer, in which case the hygrometer is ok too), and measure the gravity once it arrives.

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