Author Topic: Bru'n Water question about mash water amount.  (Read 717 times)

Offline Steve L

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Bru'n Water question about mash water amount.
« on: June 09, 2017, 04:01:09 AM »
My mash tun has .79 gallons under the false bottom and .22 gallons of dead space. When I calculate my water/grist ratio (1.5 qt/lb) in beersmith, it automatically adds the deadspace and amount under the false bottom. When I'm entering the Mash water volume on the mash acidification calculator and the water profile adjustment, am I correct in assuming that I should add these amounts to my mash water entry? Essentially  In order to make my water adjustments accurate should I be using the adjusted amount?

thanks,
Stevo
Corripe Cervisiam

Offline mabrungard

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Re: Bru'n Water question about mash water amount.
« Reply #1 on: June 09, 2017, 12:20:27 PM »
The water volumes entered into those categories should be the actual amounts used.

For some brewers, the 'actual amounts used' might vary. Some brewers prepare a large volume of water that is more than they will actually use. In order to get the ionic concentrations correct, that full volume needs to be entered so that you dose the salts properly.

However in the case of the mash, the mashing water volume MUST be equal to the ACTUAL amount of water that you'll be adding to the mash tun. It doesn't matter if there unrecoverable deadspace or volume in the tun, all volume must be included since that extra water does influence the chemistry of the mash. The mineral salt dosing for the mash must match that actual mash tun volume.
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Offline Steve L

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Re: Bru'n Water question about mash water amount.
« Reply #2 on: June 09, 2017, 12:42:55 PM »
The water volumes entered into those categories should be the actual amounts used.

For some brewers, the 'actual amounts used' might vary. Some brewers prepare a large volume of water that is more than they will actually use. In order to get the ionic concentrations correct, that full volume needs to be entered so that you dose the salts properly.

However in the case of the mash, the mashing water volume MUST be equal to the ACTUAL amount of water that you'll be adding to the mash tun. It doesn't matter if there unrecoverable deadspace or volume in the tun, all volume must be included since that extra water does influence the chemistry of the mash. The mineral salt dosing for the mash must match that actual mash tun volume.
Very good, this is what I suspected. Thanks for the info!
Corripe Cervisiam