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Thread: Calcium Build up Problems

  1. Back To Top    #1

    Join Date
    Aug 2014

    Calcium Build up Problems

    Some help please!! I have a Intex SWG. I am having a issue with white, I am assuming is calcium, build up on my plates. This build up will take place in the matter of 6 hours. Enough build up were my SWG will stop working and start giving me high salt alarms. Intex says its because i have high calcium in my water. At the time they said that my hardness was 120 ppm. Another pool specialist said that would be the case in inground pools but not above ground pools. He said my calcium is to low. So I added a calcium increaser and let it circulate for 24 hours. I cleaned my plates once again and ran it for six hours overnight. In the morning they were white again. Here is my latest pool water readings.

    (Local Pool Store testing) using a WaterLink Express system
    FC- 0.25 Low do to the SWG not working correctly
    TC- 0.39
    Combined C- 0.14
    pH- 7.6
    Hardness- 220 ppm
    Alkalinity- 150 ppm
    Cyanuric Acid- 55ppm
    Salt 3,600

    Everyone I know has taken a shot at this and we have not figured it out yet. Any help would be greatly appreciated. It is getting to the point were I believe there is something wrong with the plates and not my water.
    22 x 52 Above Ground Intex Ultra Frame
    10,500 Gallons
    Intex 3,000 GPH 16 in Sand Filter Model SF60110
    Pool Installed at the end of 2013 summer season.
    Intex Saltwater Generator

  2. Back To Top    #2
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Murrieta, CA

    Re: Calcium Build up Problems

    You don't need calcium in a vinyl pool. Try lowing your PH to 7.4 using muriatic acid. You also use a mixture of muriatic acid and water to clean the plates. (Follow what the manual states.)
    Murrieta, CA. 15K (Est) pool/spa. Hayward Tristar SP3220EE 2.70HP pump, Hayward Swimclear Cartridge filter C4025 425sqft (PA106), Pentair Mastertemp 400 heater. TF-100/Speedstir

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