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  1. J

    TA is only 20!

    3 weeks into new fill in 600 gal spa been lowering ph every couple days to maintain approx 7.5 TA was 80, then 50, 40, 30, now it's only 20 ph is currently 7.3 is this bad?
  2. J

    spas using stenner or liquidator

    Am thinking about auto-chlorinate system to lessen daily FC checks. Is SWC currently the favorite for use with spas? I have a 650 gal system with ozonator. It gets maybe 4 person/hours usage per week (in winter), 1/2 that or less in summer.
  3. J

    Why is CYA desired when using SWG in spa?

    Why not just up the setting on SWG to compensate for greater fc loss?