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Do not fill your spa with soft water. If your water is extremely hard, you can mitigate it somewhat with the addition of SOME soft water, but generally not more than 20 - 25% which means about the top three inches of the tub.
I'll be doing my next fill by soft water, out of necessity....the hard water spigot got knocked off the side of the house, so the only one left is softened...hopefully I won't have any issues.... *sigh*
QuoteI'll be doing my next fill by soft water, out of necessity....the hard water spigot got knocked off the side of the house, so the only one left is softened...hopefully I won't have any issues.... *sigh*Many water softeners have a bypass valve on them- if you have a softner with this valve, you could concievably fill up with hard water. (or maybe you could cajole a neighbor out of a few hundred gallons of their outside water) I won't bother asking how you managed to knock the outdoor spigot off your house!