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Question regarding hardness

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CV3720:

--- Quote from: BullFrogSpasMN on January 16, 2021, 11:29:49 am ---correct, you can add for a very cheap cost liquid calcium to the spa, just don't go overboard, I find 75-150ppm for calcium hardness is a good level where it's not too hard and not too soft.  Good Luck!

--- End quote ---

Two different test strips show me down/around "zero" as far as hardness goes.

I picked up some calcium chloride on Amazon (less expensive "food grade" than "spa grade"). Would you say this page properly takes care of the math?  https://www.horizonpoolsupply.com/resources/calculators/raise-calcium-hardness

A Rai:

--- Quote from: CV3720 on February 02, 2021, 07:42:03 am ---
--- Quote from: BullFrogSpasMN on January 16, 2021, 11:29:49 am ---correct, you can add for a very cheap cost liquid calcium to the spa, just don't go overboard, I find 75-150ppm for calcium hardness is a good level where it's not too hard and not too soft.  Good Luck!

--- End quote ---

Two different test strips show me down/around "zero" as far as hardness goes.

I picked up some calcium chloride on Amazon (less expensive "food grade" than "spa grade"). Would you say this page properly takes care of the math?  https://www.horizonpoolsupply.com/resources/calculators/raise-calcium-hardness

--- End quote ---

It would work to about 100 grams of the Calcium so that sounds about right. I had to put that amount in as per recommendation from my water testing company that sells the supplies for our tub.

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