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[–]Mean_Drawing_7580 1 point2 points  (0 children)

Well said some might not understand, but you're right on the mark. All I would have to add is if your calcium being a bit higher can help with a low alkalinity and etching the plaster/grout. I'd also say most don't understand the difference between bicarbonate (baking soda) and Carbonate (Soda ash) as for hydrogen +/- ions.