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Old 01-06-2013, 06:56 PM   #1
mkravitz13
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Default *Advice: MLT Dead Space and Mashing Out

hey everyone,

while this may be my first ever post, this is absolutely not my first time to homebrewtalk. ive been frequenting these forums for months and months for sound advice that have made me lots of excellent homebrewed beer. i love forums!

been searching everywhere for a solid answer to a question without getting a firm response.

in my 5 gallon MLT, I have 0.25 gal of deadspace.

I brew 2.75 gal batches which requires about a 3.75 gal boil for my system.

I'd like to batch sparge the denny way.

seasoned veterans and homebrewers, please lend me some advice!

Which water volume should I adjust to account for my deadspace?

  • strike water volume?
  • mashout water volume?
  • sparge water volume?
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Old 01-06-2013, 07:03 PM   #2
theveganbrewer
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http://www.brewheads.com/batch.php
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Old 01-06-2013, 11:30 PM   #3
mkravitz13
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Quote:
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thanks for the link, but I don't see an option anywhere here that accounts for dead space!
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Old 01-07-2013, 03:41 AM   #4
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Adjust the strike water only.
The first water addition will fill the dead space, and stay there during all other water additions.

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Old 01-07-2013, 03:56 AM   #5
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Quote:
Originally Posted by acidrain View Post
Adjust the strike water only.
The first water addition will fill the dead space, and stay there during all other water additions.
hmm. thats what I saw beersmith suggested as well. but what I dont get is by adding more water to my strike volume (to fill the deadspace) doesn't that in turn change my target water/grist ratio?
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Old 01-07-2013, 04:08 PM   #6
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anyone? ive seen discrepencies between a bunch of different mash/sparge calculators. some say add the deadspace to the strike volume. others to the mash out volume.

but again, wont adding water to the strike volume change my target water/grist ratio???

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Old 01-07-2013, 04:12 PM   #7
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I may be completely missing something, but I don't think that you adjust up like that. Otherwise, people using huge rectangular coolers would be using a ton of water, which would just kill the ratio. In effect, the size of cooler you own would dictate the kind of beer you could make, and that just doesn't make sense.

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Old 01-07-2013, 04:17 PM   #8
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If you adjust the strike water and nothing else, your ratio will be off, well, that seems logical. Subtract equal amount of sparge water or add extra time to the boil to make up for the extra water? Don't take this as a statement, I'm a beginner trying to figure all this stuff out. But I think I understand your logic and how making just that one adjustment, without counteracting it, would throw things off.

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Old 01-07-2013, 04:20 PM   #9
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Quote:
Originally Posted by homebrewdad View Post
I may be completely missing something, but I don't think that you adjust up like that. Otherwise, people using huge rectangular coolers would be using a ton of water, which would just kill the ratio. In effect, the size of cooler you own would dictate the kind of beer you could make, and that just doesn't make sense.

I think I may be missing something too... doesn't make sense to me either.
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Old 01-07-2013, 04:23 PM   #10
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Quote:
Originally Posted by mkravitz13 View Post
anyone? ive seen discrepencies between a bunch of different mash/sparge calculators. some say add the deadspace to the strike volume. others to the mash out volume.

but again, wont adding water to the strike volume change my target water/grist ratio???
It will change the ratio but not enough to even worry about. I read where someone conducted a experiment and added all the strike and sparge water all at once and then just drained it and did not suffer any efficiency problems. If any problem would arise I would think it would be come from having a mash to thick instead of to thin.

I do not worry any more about it with my set up. I know I have to about fill my tun up twice to get my boil volume. Once for the strike and once to sparge. Last night doing that I got 85% efficiency when I brewed and the mash seemed kind of thin at first but hey it worked so I have run with it for over a year now
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