HIGH Calcium

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Originally Posted by darenjones

I highly suggest to anyone else reading this, if they have vinyl, or fiberglass, to fill entirely with soft or treated water (0 hardness) the water feels incredible!

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I have fiberglass and do fill with water that has 0 hardness. I have to agree. (however I do also have a heater and grouted tilework on the outside of the spillover spa with a marble spillway so I end up adding some calcium back into the water to help protect them)