Alkalinity reduction-AMS

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BeerBrain83

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Hi everyone, this is the first time I've aimed to change my water. I've bought some Murphy and Son's AMS to reduce alkalinity. My total Alkalinity as Calcium Carbonate is 305 mg/l. My calcium is 134 mg/l. I am aiming to brew a West Coast IPA (I tried a NEIPA with no water treatment, and it seemed to have lost most of the flavours). I've also got quite low sulphates (74 mg/l) which if I understand right I need to bump up to help with hops. I'm aiming to raise sulphates with Gypsum and/or Epsum (my magnesium is 17.1 mg/l). My chloride is 118.4. Any thoughts on that would be gratefully received, thank you.

When is best to add the AMS? Is it add before water gets to target temp, after, or as water rising in temp etc before adding to mash tun? Or if it makes no difference. Also to check if anyone has any used Epsom and/or Gypsum with it and to check that is ok? Thanks!
 
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