Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Extremely Low OG - need help
Reply
 
LinkBack Thread Tools
Old 02-02-2012, 05:33 PM   #1
Steve44
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Cranford, NJ
Posts: 10
Default Extremely Low OG - need help

I am new to AG brewing/brewing in general. I built a three teir Keg system. all of my batches have had low og reading 1.0125 to 1.020. and I can't figure out where things go wrong.

Last attempt: Irish Red Ale (AG kit from Midwest brew)
9lbs - 2 row
12oz - carmel 40
4oz - Special Malt
4oz- roasted barley

Mash in: 152 - 3.31gallons (+2gallon for dead space under bulkhead)
Mash out: fly sparge 170 - 5 gallons

pre boil volume 7 gallons, (1.5 boil off and .5 deadspace under bulkhead)
post boil volume 5.25 gallons

took OG after boil cool at 80 degrees. even with the add-back the OG is way low.

Mash tun was tipped to get the bottom wert (appox 2 gallons of beautiful amber color wert)

I have a bazooka screen attached to the bulkhead, but I don't think the design matters as I tip the mash tun.

iodine test confirmed that I had no starches.

I don't have bubles in the airlock of fermenter.

Hydrometer reads 1.000 in water.

Any suggestions would be helpful

__________________
Steve44 is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 06:25 PM   #2
RyanWeary
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Dallas, TX
Posts: 133
Liked 1 Times on 1 Posts

Default

Hi Steve:

If you're sure you're getting all of the wort out of the tun I would suggest making sure you mash in well. No dough balls, even distribution of your hot water..... 9#'s of 2-row out to get you plenty of fermentables at 152. I would check your thermometer against a few others and make sure it's not off.

Also check your crush. That's a biggie that could throw your efficiency WAY off.

I know you said you did a starch test - but how long are you mashing? Perhaps a longer mash time will help improve extract efficiency.

I'm sure others will add - but those are just my initial thoughts.

__________________

For me, brewing is more than a hobby but less than a career.

Primary: German Pils
Secondary: Belgian Abbey Ale
On Tap: House Pale Ale

RyanWeary is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 06:47 PM   #3
tre9er
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Lincoln, NE
Posts: 4,372
Liked 233 Times on 197 Posts
Likes Given: 35

Default

When you say "mash in at 152" you're saying you had stable 152 temp before you "put it away" for mashing? What was the temp of strike water? Do you insulate mash and leave it alone or maintain temp with burner-firing?

__________________

_________________________________
Skal!
Den Faaborg Bryggeri

Quote:
Originally Posted by davekippen View Post
Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
tre9er is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 06:52 PM   #4
BoogieBrandBooze
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2009
Location: NJ
Posts: 169
Liked 2 Times on 2 Posts

Default

This may sound like a condescending question but it's not meant to be so please don't take offense!

Are the grains crushed? I've heard stories of people with similar problems who found out later that they had forgotten to crush the grains! Unlikely, I know, but just in case!

__________________
BoogieBrandBooze is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:13 PM   #5
Steve44
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Cranford, NJ
Posts: 10
Default

No offense taken. I need the help. I have a cousin who brews a state away and he is perplexed also.

I received crush grains in the kit. I had no dough balls and the grain bed looked fine as I was mashing out.

My strike water was 160, and I mashed in at 152 (per kit directions) and held it for an hour. then fly sparged keeping 1 to 2 inches of water above the grain bed for about another hour. As soon as I got to about 6 gallons in the boil kettle, I tip the mash tun to get the wert from the bottom of the mash tun. I figure there is some good sugars there

__________________
Steve44 is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:23 PM   #6
RyanWeary
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Dallas, TX
Posts: 133
Liked 1 Times on 1 Posts

Default

So:

1) Grains are crushed
2) No dough balls
3) Good temperature control
4) Nice sparge technique
5) Full conversion in mash
6) ??????
7) PROFIT!!

The next step I'd take is testing your water. Too high/low of a pH.... Then check your crush on your grains... Then report back! I'm curious what this could be.

__________________

For me, brewing is more than a hobby but less than a career.

Primary: German Pils
Secondary: Belgian Abbey Ale
On Tap: House Pale Ale

RyanWeary is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:27 PM   #7
BoogieBrandBooze
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2009
Location: NJ
Posts: 169
Liked 2 Times on 2 Posts

Default

Weird...and all your vessels are properly calibrated? Thinking maybe you have more volume than you think you do...but it would take a lot more water to account for a 30pt difference at the end...although really crappy efficiency (I'm talking REALLY crappy like 40% or less) combined with even and extra gallon of water would get you close to the 1.020's...

I guess I'm still stumped, I suppose...

__________________
BoogieBrandBooze is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:27 PM   #8
TaylorInOK
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2012
Location: Broken Arrow, OK
Posts: 134
Liked 17 Times on 10 Posts
Likes Given: 5

Default

I'm kinda new to the forums but i'd like to take a crack at it.

Ingredient expiration and water quality come to mind. Did you pH test?

Taylor

Edit: Bah! Ryan ya beat me to it. Tells me i'm thinking in the right direction though.

__________________
TaylorInOK is offline
RyanWeary Likes This 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:36 PM   #9
RyanWeary
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Dallas, TX
Posts: 133
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by TaylorInOK View Post
I'm kinda new to the forums but i'd like to take a crack at it.

Ingredient expiration and water quality come to mind. Did you pH test?

Taylor

Edit: Bah! Ryan ya beat me to it. Tells me i'm thinking in the right direction though.
Hah! Glad someone else is thinking the same thing as me. If Steve is getting well water I'd expect some crazy pH levels - but in my experience a municipal supply is usually decent. Not always the best - but decent.
__________________

For me, brewing is more than a hobby but less than a career.

Primary: German Pils
Secondary: Belgian Abbey Ale
On Tap: House Pale Ale

RyanWeary is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2012, 09:39 PM   #10
tre9er
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Lincoln, NE
Posts: 4,372
Liked 233 Times on 197 Posts
Likes Given: 35

Default

I'm thinking more volume might be the thing, too. I get 1.055 using your grain bill for 5.3g. Are you using sightglass or what to measure your volumes?

__________________

_________________________________
Skal!
Den Faaborg Bryggeri

Quote:
Originally Posted by davekippen View Post
Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
tre9er is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Extremely high efficiancy mlarnold All Grain & Partial Mash Brewing 8 04-21-2011 02:24 PM
Extremely low efficiency...why? snowveil All Grain & Partial Mash Brewing 11 06-13-2010 07:59 PM
Extremely Low Gravity matthewjamesstone All Grain & Partial Mash Brewing 10 04-07-2009 07:47 PM
First AG extremely low efficency mezman All Grain & Partial Mash Brewing 14 07-26-2006 05:29 PM



Newest Threads

LATEST SPONSOR DEALS