Primary fermentation woke up after 2 weeks - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Primary fermentation woke up after 2 weeks
Cool Brewing Giveaway - Supporting Membership Drive & Discount

Reply
 
Thread Tools
Old 01-16-2010, 07:46 PM   #1
gannawdm
Recipes 
 
Dec 2009
Sunnyvale, CA
Posts: 165
Liked 1 Times on 1 Posts



After 2 weeks in the primary, I assumed it was done with all fermentation. I brought it downstairs where I was going to bottle it. The next day, bloop bloop, the airlock is bubbling every now and then. Did the transport from upstairs to downstairs wake up the yeast?

I know that lack of airlock activity does not mean that fermentation is not taking place. But if there is airlock activity, then that means fermentation is definitely taking place, right? I guess I'll have to wait a bit longer. The specific gravity is 1.011-12, so I guess we'll see what it looks like in a couple days. It smells delicious though.

btw. I brought it back upstairs where the temperature is better for fermentation. Now it's bubbling like the day after I pitched the yeast. I'm confused.




 
Reply With Quote
Old 01-16-2010, 08:07 PM   #2
mojotele
Recipes 
 
Jan 2010
Baltimore, MD
Posts: 832
Liked 18 Times on 18 Posts


Sometimes airlock activity is not due to fermentation but due to CO2 escaping the beer as it warms up.

As usual, the only way to gauge fermentation is with a hydrometer/refractometer.



 
Reply With Quote
Old 01-16-2010, 08:09 PM   #3
jjones17
Recipes 
 
Oct 2009
Nanaimo, BC, Canada
Posts: 617
Liked 12 Times on 11 Posts


Good question. Definately if your airlock is bubbling, it is NOT a good indicator of whether or not fermentation is taking place. The only thing you can be sure of, is that CO2 is escaping, but that can be produced for a myriad of reasons.

The only way to be pretty sure your fermentation is complete would be to make sure your gravity reading is constant over a period of a few days.

It could be fermenting, it could not be.... use the hydrometer. I have bottled several ales after 3 weeks in the primary (I do not use a secondary) which were ALL bubbling away... with no issues. In fact, I do not even bother testing my FG until I bottle. Never had a problem, and why should I expect one? 3 weeks in usually more than enough time for an average gravity ale.

Again: Bubbling airlock is just that... it does not mean your fermentation is still happening OR not happening.

I hope you enjoy your beer!

 
Reply With Quote
Old 01-17-2010, 02:55 AM   #4
gannawdm
Recipes 
 
Dec 2009
Sunnyvale, CA
Posts: 165
Liked 1 Times on 1 Posts


OK. That's good to know. I was just a little nervous about bottling. I'll take another reading tomorrow and see if the gravity moves.

 
Reply With Quote
Old 01-17-2010, 03:00 AM   #5
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,890
Liked 3158 Times on 1869 Posts


Uh, you moved your fermenter quite alot to move it downstairs, you kicked a lot of stuff up, and more than likey co2 is venting out of the fermenter, which was probably nicely trapped in the trub. Remember an airlock is not a fermentation gauge, first and foremost it is a vent, to do just what it did, release any co2 it needed to...

Of course the act of moving it COULD have started fermentation up also...but the only way to know it THAT is the case, is with your hydrometer, not because it is bubbling.....


__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
2 weeks vs 3 weeks in primary SoloDolo Beginners Beer Brewing Forum 17 10-19-2011 06:00 PM
visual fermentation, three weeks into primary? bosunbrew Fermentation & Yeast 2 12-19-2009 04:06 AM
2 weeks in primary vs 1 skyzo General Beer Discussion 9 10-01-2009 05:58 PM
2 weeks primary 2 weeks secondary? justin22 Beginners Beer Brewing Forum 3 07-06-2009 12:57 AM
3 weeks primary, 5 weeks secondary, do I need to add yeast? TheH2 Bottling/Kegging 1 08-26-2007 04:35 PM


Forum Jump