FG stuck at 1.029?? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > FG stuck at 1.029??

Reply
 
Thread Tools
Old 09-25-2012, 05:03 AM   #1
lousybeer
Recipes 
 
Jul 2012
Posts: 19


Hi all

I have been searching the forum and haven't been able to find quite the same situation. I have seen some people stuck at 1.020 but i am stuck at 1.029.

Here are the details:

It's my 2nd all grain batch and I was trying to make a honey beer for the swmbo. Base grain was 2-row, had some honey malt in it. Mashed at 151-152F. OG was 1.053, pitched at ~72F (a little high) with wlp041 yeast. I read that it's a slow yeast, but I checked it after about a week and it's at 1.029 so I'm thinking it's slow, just give it more time. So I check at 2 weeks and it's still at 1.029... I am using a refractometer and I know the alcohol alters the readings, but it can't be that far off can it? 7 days later and no drop in gravity?

 
Reply With Quote
Old 09-25-2012, 05:41 AM   #2
WDT
Recipes 
 
Oct 2011
Fresno, CA
Posts: 298
Liked 20 Times on 17 Posts


Quote:
Originally Posted by lousybeer
Hi all

I have been searching the forum and haven't been able to find quite the same situation. I have seen some people stuck at 1.020 but i am stuck at 1.029.

Here are the details:

It's my 2nd all grain batch and I was trying to make a honey beer for the swmbo. Base grain was 2-row, had some honey malt in it. Mashed at 151-152F. OG was 1.053, pitched at ~72F (a little high) with wlp041 yeast. I read that it's a slow yeast, but I checked it after about a week and it's at 1.029 so I'm thinking it's slow, just give it more time. So I check at 2 weeks and it's still at 1.029... I am using a refractometer and I know the alcohol alters the readings, but it can't be that far off can it? 7 days later and no drop in gravity?
Relax, give it another week or 2. Let the yeast do their work.

 
Reply With Quote
Old 09-25-2012, 06:17 AM   #3
Frodo
Recipes 
 
Nov 2009
Reno, NV
Posts: 1,033
Liked 28 Times on 27 Posts


Curious how you measure your mash temp. i.e. are you sure your thermometer(s) is really accurate?

 
Reply With Quote
Old 09-25-2012, 06:23 AM   #4
lousybeer
Recipes 
 
Jul 2012
Posts: 19

Yea I figure I would wait it out, but I thought the gravity would at least move a bit after 7 days. Strange thing is that the airlock started to bubble after I took a sample, did the yeast just need to get woken up? I tried not to move it too much to not introduce any oxygen.

In response to the thermometer I don't know if it's accurate but it's a pretty new digital thermometer so I assume it's at least close to accurate.

 
Reply With Quote
Old 09-25-2012, 06:24 AM   #5
Bierliebhaber
Recipes 
 
Jul 2011
Portland, Oregon
Posts: 444
Liked 87 Times on 43 Posts


Grain bill (crystal malts?)? Mash length? Did you drop the temp from 72F after pitching (how much? how fast?)? What did you pitch for yeast? Just a vial? Starter? AND...how's it taste?

 
Reply With Quote
Old 09-25-2012, 06:42 AM   #6
Frodo
Recipes 
 
Nov 2009
Reno, NV
Posts: 1,033
Liked 28 Times on 27 Posts


Quote:
Originally Posted by lousybeer View Post
Yea I figure I would wait it out, but I thought the gravity would at least move a bit after 7 days. Strange thing is that the airlock started to bubble after I took a sample, did the yeast just need to get woken up? I tried not to move it too much to not introduce any oxygen.

In response to the thermometer I don't know if it's accurate but it's a pretty new digital thermometer so I assume it's at least close to accurate.
When you think a beer's stuck I doubt it hurts to jiggle it a bit to rouse the yeast (though you probably just caused some CO2 to come out of solution which caused some airlock activity)... as for the temp, it's an important factor and you may want to check your thermometer - there's a lot of variability apparently, some are good at the high end, some good at the low end, and some are just terrible all around (you can check the low end in an ice bath, and the high end in a rolling boil; 32F and 212F, respectively). Doesn't hurt to have multiple thermometers when brewing. [OR JUST GET YOURSELF A THERMAPEN]

 
Reply With Quote
Old 09-25-2012, 10:49 AM   #7
beerman0001
Recipes 
 
Jul 2011
virginia beach, virginia
Posts: 984
Liked 18 Times on 18 Posts


"I am using a refractometer and I know the alcohol alters the readings, but it can't be that far off can it? 7 days later and no drop in gravity?"

Did you use a conversion calculator? It can be way off. You are at a sg of 1.014 right now.
__________________
Fermenting.
On tap: World wide lager, Dopelbock, Apfelwein, American Wheat, DFH 90, Dortmunder export, Skeeterpee, Chinook/Citra ipa.
Waiting on a tap. Maibock, Two Hearted, Pliny the elder, Chimay White, Roggenbrier, DFH60
Fermenting:Apfelwein
On Deck:
Hiding in dark corner: Lambic, Flanders red, Oud Bruin, DFH 120(in bottles)

 
Reply With Quote
Old 09-25-2012, 11:49 AM   #8
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,258
Liked 7742 Times on 5432 Posts


Refractometers are pretty useless for a FG reading.

It lets you know the beer is done, since the reading doesn't change. But it's not even close to accurate once alcohol is in the mix.

You can use correction calculators, but in my experience even they aren't accurate.

Use a hydrometer. Your beer is done, and probably 1.010-1.016.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 09-25-2012, 02:17 PM   #9
lousybeer
Recipes 
 
Jul 2012
Posts: 19

Wow that is great info! Thanks for the help! I guess I will be bottling soon then.

 
Reply With Quote
Old 09-26-2012, 02:13 AM   #10
Frodo
Recipes 
 
Nov 2009
Reno, NV
Posts: 1,033
Liked 28 Times on 27 Posts


Quote:
Originally Posted by lousybeer
I am using a refractometer and I know the alcohol alters the readings, but it can't be that far off can it? 7 days later and no drop in gravity?
I didn't catch that before... yeah, get yourself a hydrometer.

 
Reply With Quote
Reply
Thread Tools



Forum Jump