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Old 07-08-2013, 09:09 PM   #1
greenhaze
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Hi All
Just got the app. Had a question about the Batch Sparge Options
Batch Sparge: Yes
Use equal batches: No
Fill mash tun: 90.0 %
Drain tun before sparge: No

What do they mean by use equal batches. I thought that you use 1.5 times the amount of water when batch sparging.
Any help
Slainte

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Old 07-08-2013, 09:19 PM   #2
stpug
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Use equal batches means that if you need to sparge more than once should the batches of sparge water be split perfectly in half. I usually have to sparge twice and mine are not split in half; I opt for about 2/3 on the first sparge and 1/3 on the second sparge.

You would technically use the amount of water needed to reach your preboil volume which will highly depend on your water:grist ratio.

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Old 07-09-2013, 01:32 PM   #3
KurtB
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stpug has it correct.

The fill % can also come into play as well. Here is how the two settings (use equal batches, and Fill %) interact...

Lets say you need 7 gallons of sparge water to hit your pre-boil volume, and your tun, with the grain already mashed, can only handle 6 gallons when filled to the very top

Fill to 90% means only fill the tun with 5.4 gallons (6 * 0.9) so you have a little head room.
With the "Use equal batches" set to NO, Beersmith will calculate one 5.4 gallon batch, and one 1.6 gallon batch to make up your 7 gallons.
With the "Use equal batches" set to YES, it will calculate 2 batches of 3.5 gallons each.

I have found that I need to use a bit of common sense when the setting is set to 'NO' because I have seen the software calculate a second batch size of less that a gallon, which was not practical on my system.

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