user 246304
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- Aug 24, 2017
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Hello all,
I've been gathering up for a first brew on my system tomorrow, and absent to some extent from this forum in the meanwhile, so sorry guys to those who have contributed in other threads. Thanks for the thoughts and I will be coming back in.
I'm hoping to get a reality check for this brew tomorrow, and will be coming back to understanding the background why after the brew.
Bit puzzled by a couple spreadsheet results. My water has TA=322 - 5 weeks apart I got 321.5 and, today's, 322, so have some confidence in the results. Going with a guideline provided by Murphy and Sons - and I'm not saying I'll stay here, but I'd like to try a variety of styles using their guidelines - they have Ca=120-170, SO4=100, Cl=300, TA=150.
My water is highly carbonate while relatively low in the desired anions. Using John Palmer's spreadsheet, which doesn't take into account the grain bill, obviously, I'm adding in gypsum, CaCl, and 37% HCl to get within the desired range of TA and mineral content. This is an RIS, and it doesn't make any sense to me to add in much of anything, most especially HCl, but those are the numbers. (I obviously will need to add in minerals if I wanted higher content here than I have. And I know that will lower the TA. I'm talking about the idea of adding in strong acid to a very dark mash - though I have yet to understand the "weak connection" of color to mash pH).
Plugging in these acid and mineral figures into Martin's spreadsheet, I'm coming in egregiously low - 4.2 pH. To be expected. The only way I can get within a good mash pH range (5.22) is to do nothing whatsoever to the water. But then I have a very low mineral content of SO4 17, Cl=12.
Thoughts?
I've been gathering up for a first brew on my system tomorrow, and absent to some extent from this forum in the meanwhile, so sorry guys to those who have contributed in other threads. Thanks for the thoughts and I will be coming back in.
I'm hoping to get a reality check for this brew tomorrow, and will be coming back to understanding the background why after the brew.
Bit puzzled by a couple spreadsheet results. My water has TA=322 - 5 weeks apart I got 321.5 and, today's, 322, so have some confidence in the results. Going with a guideline provided by Murphy and Sons - and I'm not saying I'll stay here, but I'd like to try a variety of styles using their guidelines - they have Ca=120-170, SO4=100, Cl=300, TA=150.
My water is highly carbonate while relatively low in the desired anions. Using John Palmer's spreadsheet, which doesn't take into account the grain bill, obviously, I'm adding in gypsum, CaCl, and 37% HCl to get within the desired range of TA and mineral content. This is an RIS, and it doesn't make any sense to me to add in much of anything, most especially HCl, but those are the numbers. (I obviously will need to add in minerals if I wanted higher content here than I have. And I know that will lower the TA. I'm talking about the idea of adding in strong acid to a very dark mash - though I have yet to understand the "weak connection" of color to mash pH).
Plugging in these acid and mineral figures into Martin's spreadsheet, I'm coming in egregiously low - 4.2 pH. To be expected. The only way I can get within a good mash pH range (5.22) is to do nothing whatsoever to the water. But then I have a very low mineral content of SO4 17, Cl=12.
Thoughts?