Randy Holmes-Farley
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Hi Randy,
I think there is no easy way to accomplish this with a two part additive. Where do you add the sulfate to to avoid a relativ increase in chloride? In theory it can be added as sodium and potassium sulfate to the alkalinity solution but this would incrase the salt freight and would increase salinity a lot. So I guess no two part method adds sulfate and they accept a shift towards chloride. There is no way to avoid the addition of chloride and not balancing it with the right proportion of sulfate just means a shift towards chloride. In my eyes this means this claim is just a claim and it is not completely true.
This is easily accomplished, and is what is done. There is no shift toward chloride.
In my DIY, the sulfate comes with the magnesium sulfate in the magnesium third part. It is exactly balanced with respect to sulfate and chloride.
In a commercial material, it is put into the alkalinity part as sodium sulfate. It can be exactly balanced with respect to chloride and sulfate.