How do I adjust water treatments based on new water source?

[BeeBrews]

Hi,

If I have my target water specs from an older brew of the same recipe and I have the new source water report how do I get the water chemistry calculator to give me my salt additions (I'm adding gypsum and CaSO4) and also phosphoric acid.

I feel like i'm overcomplicating it for myself and step advice would be greatly appreciated!

thanks

 

[Ozarks Mountain Brewery]

top right of the website, profile drop down the water profiles add the source there then when done you can pick it from the calculators