Any chemists on here? Quick question

[Matt in Birdham]

Currently I am pre-treating my water with slaked lime to precipitate out the temporary hardness. This seems to be working great, dropping alkalinity from 240 or so down to 50ish.

Before brewing I also have a bunch of other treatments to add: campden, gypsum and sometimes calcium chloride. It is a minor pain because I have to decant water from my slaked lime treatment bucket and then add the subsequent treatments to the mash and sparge water separately.

Question: Is there any reason why I couldn't just add all of my treatments at the same time? This would be slaked lime, gypsum, campden and calcium chloride. It would make my life a little easier. I can't add the treatments after the slaked lime has precipitated, because I don't want to stir the sediment up. My concern is that there might be some other chemical reactions that occur when adding everything at once, and my results might be different.

[Aleman]

The only issue that I can see is that with highish levels of calcium, gypsum can be a PITA to get to dissolve.

Campden treatment as you fill your container, then any calcium chloride, then slaked lime, then decant the treated liquor and add the gypsum.

[Matt in Birdham]

Thanks Aleman - sounds like a plan! Will make life a bit easier, and lesson the chances of me forgetting something on brewday..