low OG on new rig

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jezza79

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hello all.

finished my 3 vessel rig and gave it its first run lastnight.

i have 3x 50l kegs and i batch sparged using a manifold.

i did the recipe on beer smith and had concerns regarding the total amount of water needed.
( i had the brew eff set on 72%)

everything went as planned to the recipe, perfect amount in the kettle and perfect amount into cube after the hours boil.

the OG was supposed to be 1046 but ended up at 1036.

i was worried about the amount of water that beersmith said to have after sparging in the kettle which was 35L for a 4.8kg brew seemed a tad high.

does this seem high????

all the brews i have done as biab only used 34L total.

any tips or thoughts would be appreciated .
 

Edak

BrauShnizzleMyNizzle
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It depends on your system, I have a boil of rate of 10.5% and a loss to trub of 2.8L. You need to time those values. You got a low OG but how much wort did you have pre and post boil? What was preboil gravity?
 

jezza79

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this is the recipe bellow.
the figures pre and post boil ended up perfect which goes to say my efficiency must be the issue.???



wit
Witbier
Type: All Grain
Date: 20/04/2013
Batch Size (fermenter): 22.00 l
Brewer: jeremy
Boil Size: 34.39 l
Asst Brewer:
Boil Time: 60 min
Equipment: Stainless Kegs (10 Gal/37.8 L) - All Grain
End of Boil Volume 26.82 l
Brewhouse Efficiency: 72.00 %
Final Bottling Volume: 19.16 l
Est Mash Efficiency 84.4 %
Fermentation: Ale, Two Stage
Taste Rating(out of 50): 30.0
Taste Notes:
Ingredients
Ingredients
Amt
Name
Type
#
%/IBU
2.50 kg
Pale Malt, Maris Otter (5.9 EBC)
Grain
1
50.0 %
2.50 kg
Wheat, Flaked (3.2 EBC)
Grain
2
50.0 %
28.00 g
Goldings, East Kent [6.10 %] - Boil 60.0 min
Hop
3
18.7 IBUs
0.50 Items
Whirlfloc Tablet (Boil 10.0 mins)
Fining
4
-
25.00 g
Coriander Seed (Boil 5.0 mins)
Spice
5
-
25.00 g
Orange Peel, Bitter (Boil 5.0 mins)
Spice
6
-
 

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