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Thread: Should I add Calcium

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    Join Date
    Jan 2015
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    Palm Springs, CA
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    Should I add Calcium

    I just had our pool bead blasted to remove years of calcium build up from our tile. My calcium has been over 1000 since we bought the house in November. It looked like the prior owner had never drained the pool since it was built in 2007.

    The fill was completed this morning, bleach added, salt added, and now here is my first test results:

    Pump has been running about 5 hours at this point.
    FC 4
    CC 0
    pH 7.4
    TA 150
    CH 175
    Temp 75

    My question is, should I go get some Calcium to bring up the CH or should I wait a few days to see if it stabilizes. When I tested the tap water prior to starting it showed the CH to be around 200.

    PoolMath says it is balanced at this point. So was wondering if I should just monitor it for a few days.

    I am loath to add calcium with all of the issues we have here due to high CH. We are in the desert with 120 degree days and lot of evaporation, so I know it will be high by end of summer.
    6640 gallon outdoor in-ground 8x26 pebble pool, 3'-5' deep, Pentair IntelliFlo Variable Speed pump, Jandy CL580 Cartridge Filter, Jandy AquaPure 1400 SWCG

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    Mod Squad jblizzle's Avatar
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    Re: Should I add Calcium

    I started with a CH lower than that and was not going to add calcium with how fast it rises from evaporation here in the desert. Just keep the pH in the upper 7s to compensate some and you should be fine. Actually your higher TA is going to compensate some as well. Just look at the CSI* number in PoolMath.

    * This is kind of an advanced concept, so ask questions if you do not follow.
    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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  3. Back To Top    #3

    Join Date
    Jan 2015
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    Palm Springs, CA
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    Re: Should I add Calcium

    Sounds like you have confirmed what I was thinking based on what PoolMath was telling me.

    Just wanted to make sure I wasn't overlooking something.

    Thanks
    6640 gallon outdoor in-ground 8x26 pebble pool, 3'-5' deep, Pentair IntelliFlo Variable Speed pump, Jandy CL580 Cartridge Filter, Jandy AquaPure 1400 SWCG

  4. Back To Top    #4
    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: Should I add Calcium

    No.

    My CH goes up about 25/week during the summer due to evaporation. You'll be well above minimum in no time.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
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    Re: Should I add Calcium

    Wow, really Richard? I am only seeing about a 125ppm rise in a year.
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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