Hi Ullstad You can ...
Published by Tamara Steubing
Hi Ullstad
You can calculate the SI (solubility index) to give you an idea of the precipitation potential. As you can see the pH has a huge impact on the precipitation potential. Without lowering the pH you will always have a problem. Just check the following source for more info:
https://www.drink-water-eng-sci.net/6/115/2013/dwes-6-115-2013.pdf