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Old 07-26-2008, 06:07 AM   #1
dalpets
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Default Grain bed optimization & rice hulls

Hi,

Is it OK to add rice hulls to a non-wheat/high gravity mash to increase the minimal depth of a grain bed containing only malted barley grains?.

If it is Ok what is the recommended maximum ratio of hulls to grain?.

Thanks

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Old 07-26-2008, 06:14 AM   #2
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You can add hulls to any brew though there not needed. There is no set ratio on adding them, I have used 1 # on a 10-14 # grain bill. However I have quit using them all together.

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Old 07-26-2008, 06:34 AM   #3
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The grain bed depth is my real concern with my low grain bill v mash cooler size . I would have thought that if I add more than an an optimal amount of hulls I could end up creating a worse drainage problem than that that might result without them.

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Old 07-26-2008, 06:35 AM   #4
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What do you have for a grain bill and Mash tun?

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Old 07-26-2008, 06:45 AM   #5
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I have two cooler mash tuns (58 & 25 quart). For this partial mash I am using a 5.5lb grain bill.

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Old 07-26-2008, 06:49 AM   #6
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Ok, I would use the 25 QT and probably 1 # of Rice Hulls.

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Old 07-26-2008, 07:04 AM   #7
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Thanks for your help.

With the present grain bill and doing my calculations of water uptake I reckon I end up with a tad less than a 4" mash using a water/grain ratio of 3.25:1 In that event the 12" bazooka would only covered by approx a 3" mash. I will give your 1 lb recommendation a try.

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