Hi Tom, Calcium Chloride will increase pH and KH. That means it will only be good for Neocaridina shrimp. As long as you use sulphate ingredients for the other minerals.
I wouldn't use this Hagen conditioner for shrimp. This one is only for African cichlid fish. As you can see from the ingredient list, "Chloride" has been used extensively. This will mean that KH, GH and pH will be way too high for shrimp. Unless you are keeping Sulawesi shrimp.
Where are you from? Calcium sulphate and Magnesium sulphate are usually very easy to source. It's fertiliser. Most places that sell fertiliser will have it. Magnesium sulphate is also known as Epsom salt.
Are you using this remineraliser for RO or rain water?
Anyway, good luck with your quest of finding the ingredients for a remineralising mix.