How can I 'harden' our water supply?

@trevor-SiZxdv • Oct 26, 2024

Oct 26, 2024

1.5K

I want to be able to harden our water supply 'on demand' so that the CaCO3 total hardness level goes from around 60 to about 140 to trial the impact on cold brew coffee brewing.

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Ramani Aswath

@ramani-VR4O43 • Feb 16, 2019

Much simpler to mix at brewing time. Make 340 ppm CaCO₃water stock. Mix equal quantities of this with the 60 ppm water to get 140 ppm water.

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Ramani Aswath

@ramani-VR4O43 • Feb 16, 2019

My apologies. There was an arithmetic error.
That should be 220 ppm. 340 will give a hardness of 200 ppm when mixed in equal quantities with 60 ppm water.

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