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d4rkh0rs t1_j6p1b82 wrote

hard meaning alcaline and full of calcium. so everything gets bad water spots and things like sinks without attention get heavy white coatings that collect stains and are annoying to remove. It also makes soaps work less well. hard being the opposite of soft or acidic. (I don't know why they call it hard or soft, will agree it's confusing)

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ITE_1415 t1_j6p1vk3 wrote

Oh, alcaline, I know that stuff!

I was confused for a mega second, but yeah, thanks for the explanation ! ^^

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