I just refilled my tub with hard water from the tap, and tested the water. My total hardness is 360 (We have very hard city water!). I realize that is about double what it should be. I would like to operate the spa with this level of harness because it is a time consuming issue to mix part hard/part soft as soft water is only available from the kitchen/bathroom faucets, and not the outdoor faucet. I will be topping up the spa with soft water, so I don't think it will exceed 360.
My question...will this level of hardness damage the spa? Short term? Long term?
