Thanks for the detailed report....
I've had my tub for a couple of months now, just as happy! Just out of curiosity why did you already drain your tub? I know some are recommending to drain after the first month or so, my water still looks great so I haven't drained yet. Wondering if I need to ?
Glad everything is working well. We use ours about 5/7 days a week. Great family time, wondering why we didn't do this sooner...