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Thread: FC & Water Heaters

  1. Back To Top    #1

    Join Date
    Jul 2009
    Ocean View, NJ

    FC & Water Heaters

    Somebody had told me that with pool heaters, the FC should not go above 5ppm. I have looked online and not found anything to prove/disprove this. My chemicals are currently FC 3.0 CC 0.0 TA 90 CH 290 CYA 50 Ph 7.4 Borates 30 Water Temp 82. According to the pool calculator, I should be at at least 4 and could go as high as 8ppm. Can I do any damage to the heater if I go up to 8ppm?
    16 x 41, 24,500 gal fiberglass with 450 gal spillover spa; Pentair intelliflow VS, Pentair Clean & Clear 420, Pentair MasterTemp 250, X-stream 2 slide; aquabot breeze 4wd

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: FC & Water Heaters

    If you aren't using any CYA at all that is mostly correct. But as soon as there is CYA in the water the limit goes way way up.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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