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This is the first tub i ever sold when I started as a Sundance dealer. It was to an elderly lady who loved the fact that it could be used as a regular bath tub or a hot tub. She has hers inside plumbed to be used both ways. the nice thing about the solo is that it does not compromise quality. I agree it is fairly pricey but it certainly does not compromise on the jetting power it offers.
I think the Solo would be limited to 104, like most other spas.