Home Brew Forums > Home Brewing Beer > Extract Brewing > How do I know when fermentation is complete?
Thread Tools
Old 07-17-2007, 09:36 PM   #1
Feedback Score: 0 reviews
Join Date: Jul 2007
Location: Connecticut
Posts: 2
Default How do I know when fermentation is complete?

My knowledge of brewing is not very extensive. I've basically just followed the instructions to complete a couple of brews, which says to let the batch ferment for 2 weeks in the 5 gal. fermenting bucket that came with the kit. There is a percolator on top which I use as an indicator. Right now I have an IPA going...it bubbled hard for the first day or two of fermentation, but now, day 5, its all but stopped. What are your recommendations on when to bottle the batch? Should I allow it to go the whole 2 weeks or can I bottle early?

EgonCT is offline
Reply With Quote
Old 07-17-2007, 09:38 PM   #2
Feedback Score: 0 reviews
anthrobe's Avatar
Join Date: Nov 2005
Location: Phoenix, AZ
Posts: 579
Liked 1 Times on 1 Posts


Next time you brew, you should use a hydrometer. This will be a very useful tool in determining when your brew is done. For this batch, I would wait at least 10 days. If you see no airlock activity for a day or so, you should be safe to bottle.

On Deck -
Primary1 -Hop Knot 10/04/07
Primary2 -
Secondary1 -
Secondary2 -
On Tap
Tap1 - Kelly's Rasberry Cream Ale 7/11/07
Tap2 - Black Stap Porter (8/25/07)
Tap3 - Hefeweizen 7/05/07
Waiting for tap\Conditioning
Keg1 -
Keg2 -
Keg3 -

anthrobe is offline
Reply With Quote
Old 07-17-2007, 09:47 PM   #3
Feedback Score: 0 reviews
AnOldUR's Avatar
Join Date: Mar 2007
Location: , New Jersey
Posts: 6,837
Liked 814 Times on 592 Posts
Likes Given: 661


You could get a hydrometer now. If readings don't chance for a few consecutive days, it's done.
AnOldUR is offline
Reply With Quote
Old 07-18-2007, 05:46 PM   #4
Feedback Score: 0 reviews
Join Date: Jun 2007
Location: The "Ville"
Posts: 1,916
Liked 10 Times on 10 Posts


If you have another bucket, this would be a good time to rack it to a secondary(off of the trub). That will usually shake the yeast up a little and stimulate more activity. If you don't get a hydrometer and you don't have a secondary, make sure that your temperatures aren't below 68 degrees or so, give the bucket a gentle rocking(no splashing!) and let it go for 10 days.
Low temps can slow fermentation to a crawl. The danger there is that the brew gets bottled and eventually overcarbonates or explodes. Good Luck.
cheezydemon is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
is my fermentation complete? wagonsnz Beginners Beer Brewing Forum 5 06-17-2009 10:12 AM
is fermentation complete amstaffer Wine Making Forum 3 11-29-2008 12:35 AM
Is fermentation complete? PhoenixCoyote Cider Forum 4 06-18-2006 09:57 PM
Is my fermentation complete? nick1023 General Techniques 3 10-13-2005 03:55 AM
Fermentation Complete? DesertBrew General Techniques 16 02-03-2005 01:01 AM

Forum Jump