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Old 09-14-2012, 07:38 PM   #1
Tarks
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Default Water Question

I have been all grain brewing all summer ( 8 batches) with successful results and I want to take it to the next step. The next step is water chemistry. To this point, the only thing I have been doing on brew day is running my water through a carbon filter, getting rid of any chlorine.

I have been reading on the topic for the past month or so, got a lab report of my local tap water and I need a bit of guidance.

The following is the lab report of my tap water:

Calcium - 21.1 ppm
Magnesium - 6.1 ppm
Sulfate - 52 ppm
Sodium - 34.6 ppm
Chloride - 19 ppm
Total Alkalinity (HCO3) - 83.0 ppm
PH - 7.47

Plotting this info on John Palmer's PH Mash Chart I end up with this:



I am brewing an 11 gal batch of an English Brown Ale (14 SRM) tomorrow and based on the chart I think my water is suitable to produce a decent product. However, I want this beer to be malt forward and to achieve this I would need to increase the chloride.

My water is soft and I would like to harden it up a bit. Using Beersmith's water profile calculator I have increased the calcium, magnesium, sodium, chloride and bicarbonate into the recommended range:

Calcium - 104.3 ppm
Magnesium - 13.3 ppm
Sulfate - 80.4 ppm
Sodium - 44.6 ppm
Chloride - 121.8 ppm
Total Alkalinity (HCO3) - 147.1 ppm

Plotting these numbers into John Palmer's PH Mash Chart I now end up with this:



Now, I understand that this chart is guideline and measuring the PH during the mash is a necessity but does this look good? Any constructive advise would be much appreciated by you experts. Cheers.

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Old 09-14-2012, 07:43 PM   #2
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I will also add that Beersmith's calculations are getting me to add the following to 6.51 gal of water:

1.8 g of epsom salt
5.5 g calcium chloride
.9 g baking soda
1.5 g chalk

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Old 09-14-2012, 08:21 PM   #3
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I would read up on http://www.homebrewtalk.com/f128/bre...primer-198460/. There are various spreadsheets also, but I like AJ's fairly straightforward approach for calculating additions.

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