GH Booster vs Calcium Chloride and Epsom Salts

[Macfan]

I've been using Barr's GH Booster to reconstitute RO water and nothing I do (stirring with a whisk, dissolving in boiling water, etc) seems to get me around the tank looking like a snow storm just hit after adding it. While it mostly dissipates after 12 hrs or so, I would still like to avoid it if possible.

I did some research and found that GH Booster consists of:
3 parts Potassium Sulfate
3 parts Calcium Sulfate
1 Magnesium Sulfate (Epsom Salts)

This site recommends Calcium Chloride and Epsom Salts to boost GH and Baking Soda to boost KH. It notes that you need to add these separately or you will end up with Calcium Sulfate which is hard to dissolve (which is a component in Barr's GH Booster.)

The main difference between the GH booster and what this site recommends is Potassium Sulfate. While some descriptions of EI include dosing Potassium Sulfate, I read that there is plenty of Potassium in the Potassium Nitrate so it's not necessary to dose Potassium Sulfate as part of EI.

My question is, does the Potassium dosing in EI assume that Potassium exists as part of the GH (whether added or existing in the water)? If I stick with the GH Booster formula, can I make it with Calcium Chloride instead of Calcium Sulfate as long as I use it in a proportion that provides an equivalent amount of calcium? AquariumFertilizer.com sells both Calcium Chloride and Calcium Sulfate.

Incidentally, my LFS said they reconstitute RO water for their tanks using a marine buffer product, but I'm looking for a solution that uses raw ingredients I can get at a lower cost than commercial products since I manage many tanks.

Michael

[jonny_ftm]

One year later answer...

Calcium sulfate causes the cloudiness
I add CaSO4 using a sort of sieve you can find in any store, I add the powder to a 2L container by small parts, I mix it well as soon as it is added to avoid calcium precipitate, then I add the cloudy water of the small container to the bigger container where the new water (used for my weekly waterchange) is resting, I just mix in 2-3 turns and no cloudiness at all. I add about 5°GH to the mix solution, no problem. Once in the aquarium, no cloudiness at all

But, you can use CaCl2 to avoid the hassle. I have to finish my CaSO4 stock to move to CaCl2 also