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Thread: HELP......constant calcium buidup on cup strainer

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    HELP......constant calcium buidup on cup strainer

    Please don't post the same topic in multiple places. Bama


    here are my specs...
    pentair clean and clear plus cartridge filter 420
    polaris autoclear plus salt system
    polariscaretaker infloor system
    polaris leaftrapper system
    calcium/hardness= approx. 500
    cya= 75
    ta=180
    ph=7.8
    fc=8
    tc=10
    pool is 13,440 gallons
    pump\filter runtime is 6 hours per night
    cell run time is 5 1/2 hours per night
    my problem is every night I get a buildup of calcium flakes on the caretaker cup strainer (which is basically a small filter like screen which prevent any large objects getting into the popup gears,etc.)....and once it is covered completely (every night) the pressure in the caretaker and filter system go way up to a point that the popups stop cycling. Without doing a drain and fill (Im in AZ and it is too hot for that now) what can I do......everything has been cleaned way more than I usually have done recently.Pool is 5 years old....has had 1 drain and refill 2 years ago. I called calsaway and they were not much help.....were afraid to guarantee results. Is it possible the buildup is in my lines and I just have to "wait" it out. I put Scalefree in it about 2 weeks ago. I do not have much scale in pool itself. HELP!!!!!! the odd part is this...........I bypassed the salt cell (took it out an put in straight tube)...and there was almost no buildup on cup strainer. To clean this little filter is a real drag everyday...I used to do it about once a month.
    9 year old 15,500 gallon, inground plaster pool in AZ with attached spa
    SWC by SGS, model Breeze 540
    3 separate pumps (filtration, water feature & spa) also has in floor Polaris/Zodiac 5 port leaftrapper system (popups)
    heater (never used for main pool, only for heating spa)

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,331

    Re: HELP.....calcium problem or not

    With a CH of 500 and a pH of 7.8 and a TA of 180. The jury says it's calcium scaling. You can keep your pH as close to 7.2 as practical with muriatic acid, and by doing so your TA will come down. That will help you scaling. You will have to be diligent about the pH to prevent the scaling from returning.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    HELP.......Calcium buildup in caretaker system

    here are my specs...
    pentair clean and clear plus cartridge filter 420
    polaris autoclear plus salt system
    polariscaretaker infloor system
    polaris leaftrapper system
    calcium/hardness= approx. 500
    cya= 75
    ta=180
    ph=7.8
    fc=8
    tc=10
    pool is 13,440 gallons
    pump\filter runtime is 6 hours per night
    cell run time is 5 1/2 hours per night
    my problem is every night I get a buildup of calcium flakes on the caretaker cup strainer (which is basically a small filter like screen which prevent any large objects getting into the popup gears,etc.)....and once it is covered completely (every night) the pressure in the caretaker and filter system go way up to a point that the popups stop cycling. Without doing a drain and fill (Im in AZ and it is too hot for that now) what can I do......everything has been cleaned way more than I usually have done recently.Pool is 5 years old....has had 1 drain and refill 2 years ago. I called calsaway and they were not much help.....were afraid to guarantee results. Is it possible the buildup is in my lines and I just have to "wait" it out. I put Scalefree in it about 2 weeks ago. I do not have much scale in pool itself. HELP!!!!!! the odd part is this...........I bypassed the salt cell (took it out an put in straight tube)...and there was almost no buildup on cup strainer. To clean this little filter is a real drag everyday...I used to do it about once a month.
    9 year old 15,500 gallon, inground plaster pool in AZ with attached spa
    SWC by SGS, model Breeze 540
    3 separate pumps (filtration, water feature & spa) also has in floor Polaris/Zodiac 5 port leaftrapper system (popups)
    heater (never used for main pool, only for heating spa)

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: HELP.......Calcium buildup in caretaker system

    Your PH, TA, and CH levels are all higher then normal. That causes calcium to deposit in your SWG. The SWG automatically reverses polarity, which causes the calcium to lift off the plates and continue down the pipe, in to the caretaker system.

    If you bring down some combination of PH, TA, and CH levels enough this process will stop, or at least slow down dramatically. Start by lowering your PH to 7.2 right away, and then start on the lower TA process as described in Pool School. Lowering CH may or may not be worth doing right away, but you can certainly bring PH and TA down, and that will probably be enough to solve the immediate problem.
    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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