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Old 09-22-2008, 01:15 AM   #1
eddie884
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Default Batch sparge with finer grain crush

If I plan to batch sparge, can I grind my grain finer than if I planned to fly-sparge? It seems that batch-sparging doesn't need a filter bed like fly-sparging; thus, the husks are not needed to stay intact, correct? Is there any other reason to keep the husks intact other than providing a good filter bed?

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Old 09-22-2008, 01:24 AM   #2
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Originally Posted by eddie884 View Post
If I plan to batch sparge, can I grind my grain finer than if I planned to fly-sparge? It seems that batch-sparging doesn't need a filter bed like fly-sparging; thus, the husks are not needed to stay intact, correct? Is there any other reason to keep the husks intact other than providing a good filter bed?
So they don't end up in the wort?

I batch sparge, and even with vorlaufing, a fine crush sometimes works it way through the grainbed. The other problem with a too-fine crush could be a stuck sparge.
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Old 09-22-2008, 01:53 AM   #3
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There's no difference in the need for a filter bed.

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Old 09-22-2008, 01:59 AM   #4
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Could he compensate for the finer crush with a pound of rice hulls to act as a filter bed?

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Old 09-22-2008, 02:05 AM   #5
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You could, but you can get a plenty fine crush without completely pulverizing the husks. Rice hulls are only needed when a large portion of the grist is hulkless like flaked grains and wheat.

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Old 09-22-2008, 04:22 AM   #6
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You could, but you can get a plenty fine crush without completely pulverizing the husks. Rice hulls are only needed when a large portion of the grist is hulkless like flaked grains and wheat.
I asked AHS to grain my order finer because I batch sparge and they gave me a great crush with the husks still intact. I did use .5 lbs of rice hulls since I was adding 3 lbs of pumpkin, but it wasn't necessary. The wort flowed fine through the bed and stainless mesh.

Bobby_M is right on, you can get a pretty fine crush and keep the husks intact. I did vorlauf about 4 quarts simply because it was easy and the wort was running very clear after that.
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