Originally Posted by HollisBrewCo
some numbers for different recipes
Generally my mash water is around 17-20 gallons (i do 20 gallon batches) depending on the size of the grain bill
I did download Bru'n Water and i will start putting numbers into that i have used ez-water in the past so it was easier for me but easier is not always better.
IPA: I agree you could add some gypsum to bias the profile to bitter or very bitter. Assuming 20gals of mashing water
Porter: I would increase your water to grist ratio to 1.8 (if your mah tun can handle that) and use about 27gals for mash water. That with 5g of baking soda could rise you mash PH to about 5.22. profile would me malty.
Pale Ale: Add 4g of gypsum to lower PH to 5.4 and make profile balanced. Assuming 20gals of mash water.