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Thread: Low CH

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    Join Date
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    Low CH

    Is it common to have low CH constantly? I seem to have a lot of trouble maintaining CH. This year I started out with around 90 but I'm pretty sure we closed around 200. Seems like every year I have to add a butt load of CH at the beginning of the year. My pool is not covered over the winter and I do a few backwash during the winter due to rain water but didn't think I've drained over 50% of my water during the winter.
    11,000 gal Fiberglass IG, Jacuzzi sand filter, Pentair Superflo 1.5hp 2speed pump, Hayward AQR15, Maytronics Active20, K-2006 kit, K1766, SpeedStir

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    Mod Squad jblizzle's Avatar
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    Re: Low CH

    CH will not drop unless you are replacing water with some that has a lower CH content (like rain/snow or tap water).
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Low CH

    well I guess I'm actually turning over more than 50% of the water over the winter.. would algae eat up CH as well?
    11,000 gal Fiberglass IG, Jacuzzi sand filter, Pentair Superflo 1.5hp 2speed pump, Hayward AQR15, Maytronics Active20, K-2006 kit, K1766, SpeedStir

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    JasonLion's Avatar
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    Re: Low CH

    No, nothing uses up calcium except water replacement and scaling.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Mod Squad jblizzle's Avatar
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    Re: Low CH

    No algae will not eat CH ...

    Quote Originally Posted by jblizzle View Post
    CH will not drop unless you are replacing water with some that has a lower CH content (like rain/snow or tap water).
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Mod Squad YippeeSkippy's Avatar
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    Re: Low CH

    Are you sure that your fiberglass pool even needs Ca+ ? I don't even worry too much about that anymore. There is some question as to whether the gel coat on the pool contains calcium or not?
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
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