Any idea why my OG was so low?

[beerisuber]

I just brewed my first non kit beer and I used ibrewmaster 2 to do all the calculations. Below is all the date from the app. The OG was supposed to be 1.057 but was 1.033. Any ideas?

Pale #1

Style: American Pale Ale
Type: Partial Mash Calories: 107.21
Rating: 0.0 Boil Size: 2.50 Gals
IBU's: 33.36 Batch Size: 5.50 Gals
Color: 7.2 SRM Boil Time: 60 minutes
Preboil OG: 1.125
Estimated Actual
Brew Date: - 11/22/2013
OG: 1.033 -
FG: 1.008 -
ABV: 3.33 % -
Efficiency: 70.00 % 0.00 %
Serve Date: 12/21/2013 -

Grains & Adjuncts
Amount Percentage Name Time Gravity
4.50 lbs 50.00 % Malteurop American 2-Row Pale Malt 20 mins 1.038
8.00 ozs 5.56 % Caramel/Crystal Malt - 60L 20 mins 1.034
3.00 lbs 33.33 % Briess Golden Light DME 60 mins 1.045
1.00 lbs 11.11 % Briess Golden Light DME 45 mins 1.045

Hops
Amount IBU's Name Time AA %
0.65 ozs 13.78 Citra 60 mins 13.20
0.65 ozs 6.84 Citra 15 mins 13.20
0.70 ozs 2.96 Citra 5 mins 13.20
0.40 ozs 6.43 Centennial 60 mins 10.00
0.30 ozs 2.39 Centennial 15 mins 10.00
0.30 ozs 0.96 Centennial 5 mins 10.00
1.00 ozs 0.00 Citra 7 days 13.20

Yeasts
Amount Name Laboratory / ID
1 vials California Ale White Labs 0001

Additions
(none)

Mash Profile
(none)

Water Profile
(none)

Fermentation Steps
Name Days / Temp Estimated Actual
Primary 15 days @ 68.0°F 11/22/2013 11/22/2013
Bottle/Keg 14 days @ 70.0°F 12/07/2013 -

Carbonation
Bottle Carbonation
Desired Vol of CO2: 2.50 Vols
Beer Temperature: 70.00 °F
Residual CO2 in Beer: 0.83
Corn Sugar Required: 4.93 ozs

Notes
(none)
www.iBrewMaster.com Version: 1.0.9


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[Ta0]

How did you mash? It sounds like you didn't get much, if any sugar out of your malt.

 

[beerisuber]

I steeped the grain for 30 mins

 

[Ta0]

What temp?

 

[beerisuber]

160

 

[Ta0]

And did you crush the grain?

 

[beerisuber]

The brew store did

 

[Ta0]

What temp did you take the hydrometer reading. If I you took it while the wort was warm then the reading will read lower then the actual... It can be pretty significant

 

[beerisuber]

I took it after I poured it into the carboy with the remaining water. Before the yeast was added.

 

[Ta0]

Hmm... If it was close to room temp the OG is probably pretty accurate. Did you rinse the grains after you steeped them?

 

[beerisuber]

No I just tossed them. I use dme too.

 

[Ta0]

Ya I read that. DME shouldn't be an issue, toss it in, boil it and it should be dissolved. It has to be something with your grain, temp, dilution or something like that. DME is completely soluble in water as is

 

[beerisuber]

I was using a digital thermometer. So I know the temp was accurate.

I'm totally confused by this.

 

[Ta0]

The only thing I can think of right now is rinsing the grains to get all of the sugar is the only thing way out of the norm... If your water is too alkaline then the starches/sugar won't become soluble, but that's pretty bit picky and probably not the main source of your issue

 

[Coupleathree]

If you used top off water, which I think you did, it may not have been mixed together completely, which will definitely affect a hydrometer reading.

 

[beerisuber]

That's interesting. None of the kits I used ever said I should do that. But I will next time I will.

How would you suggest I rinse them? I assume I would want to do it over the pot.

 

[beerisuber]

Coupleathree that was actually something I thought about. Didn't know if that's affect it so much

 

[Ta0]

Preferably you rinse with 165 deg water... My friend is a BIAB brewer and he rinses with hose water. Just completely rinse until running is getting clear... It will help a lot, there is a lot of sugar in the mash and rinsing will help you out a lot... Hope this helps

 

[sketerbuck]

How much water did you steep the grain in. If the ratio of water to grain was way off then it could effect your conversion.

 

[beerisuber]

2.5 gallons

 

[3PegBrew]

The only thing I can think of right now is rinsing the grains to get all of the sugar is the only thing way out of the norm... If your water is too alkaline then the starches/sugar won't become soluble, but that's pretty bit picky and probably not the main source of your issue

+1 on rinsing. Easy to forget first time.

 

[beerisuber]

Thanks for all the advice.... Since I still have your attention. I was going to dry hop it too. Do I need to wait a week to do that? My friend said once the foam goes down I could.