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Thread: Calcium(?) buildup in my salt generator

  1. Back To Top    #1

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    Calcium(?) buildup in my salt generator

    Mod edit: Please only make one post for each subject. People who can help will find it in whatever sub-forum you post it in. I have deleted you other topic. Thanks, moderator linen

    I have a Jandy aquapure 1400 that I have had to change because of cell failure. Though I admit that I probably didn't acid wash it frequently enough, I was disappointed that the cell only lasted 3 years.
    I have just installed a new cell and am looking for suggestions for reducing the calcium build-up.

    The local pool supply store has recommended using a borate product that lists, among many other benefits, the prolonged life of salt cells.

    I'd like to get some input before I do this. If cell life if my main concern (currently), would a borate product be a good solution? Are there other solutions to reducing calcium issues?

    Thanks in advance,

    Mike

    PS, I will post the same question in the chemical forum as well, as my question regards both the salt generator and possibly using chemicals to help it.
    12,000 Gal plaster pool & spa.
    Jandy 2.7HP V.S. e pump, with IQpump control.
    Jandy AquaPure 1400. Jandy PDA.
    Solar heat. Jandy 400btu ng heater.
    Pentair 420 cartridge filter. Polaris 360 sweep.

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    Re: Calcium (?) build-up in my salt cell

    The use of 50 ppm Borates buffers the pH to reduce the rate of pH rise. Roughly speaking, it cuts down the amount of pH rise in half at the hydrogen gas generation plate in the SWG cell. So yes, the use of Borates help reduce calcium carbonate scaling in the SWG cell. Maintaining a somewhat lower Calcite Saturation Index also helps.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    linen's Avatar
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    Re: Calcium(?) buildup in my salt generator

    3 years is on the short end for cell life, how big is your pool?

    Are you following the tfp recommendations for chemical levels? See: http://www.troublefreepool.com/pool-...ater_generator

    Many of us on here rarely need to do acid cleaning of our cells by keeping our pools in the ranges mentioned in the link.

    Borates can help, but you should get your TA down to 80 ppm before adding them. Most likely the ps version of borates will be significantly more expensive then boric acid you can buy online or the other alternative of using borax and Muriatic acid to raise borate levels. See: http://www.troublefreepool.com/so-yo...how-t4921.html

    Post your latest measurements for TA, ph, CH, cya, salt level and we may be able to help you reduce the likelihood for cell scaling.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Calcium(?) buildup in my salt generator

    Thanks for the quick replies, folks.
    The pool is small.
    11,000 gallon
    plaster
    aquapure 1400
    solar and gas heat
    Pentair 320 cartridge filter
    2 HP pump
    spa, with air pump
    Jandy PDA


    No, I have not been following the tfp recommendations.
    I have been way too complacent about maintaining chemicals, and now am paying the price.
    I will do a complete water test this weekend and post the results

    Thanks again for the replies.
    I'll be back

    Mike
    12,000 Gal plaster pool & spa.
    Jandy 2.7HP V.S. e pump, with IQpump control.
    Jandy AquaPure 1400. Jandy PDA.
    Solar heat. Jandy 400btu ng heater.
    Pentair 420 cartridge filter. Polaris 360 sweep.

  5. Back To Top    #5

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    Re: Calcium(?) buildup in my salt generator

    I'm back and interested in your advice.
    Linen suggested that I post the recent test results.
    Salt - 2500
    CH- 250
    CYA- 70
    TA- 160
    pH- 8.0

    In addition, I found that my phosphates are high.(250)

    I have spent some time this week with the "pool math calculator".
    I know that I have to add acid to correct the pH and TA. I have some phosphate additive. (Phosfree) to bring that count down.
    What I am really interested in though, is suggestions for reducing future cell scaling.
    My new cell is working, and I am thrilled. I'd like to keep it that way.

    TIA,

    Mike
    12,000 Gal plaster pool & spa.
    Jandy 2.7HP V.S. e pump, with IQpump control.
    Jandy AquaPure 1400. Jandy PDA.
    Solar heat. Jandy 400btu ng heater.
    Pentair 420 cartridge filter. Polaris 360 sweep.

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    Re: Calcium(?) buildup in my salt generator

    I wouldn't worry about the phosphates. Getting the pH and TA down should be your priority.

  7. Back To Top    #7
    linen's Avatar
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    Re: Calcium(?) buildup in my salt generator

    Keeping ph down (below 7.8) and lowering TA will help with reducing cell scaling. Shoot for 70-80 ppm for TA as the swg balance pool school article suggests. If you still get cell scaling after that, then trying borates might make sense.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Calcium(?) buildup in my salt generator

    Too high of pH and TA are causing the scaling in the cell. Use the ranges that the others have said and the scaling will be reduced. For now, check the cell monthly and gently clean the scale off with a piece of wood such as a chop stick. Only use acid when the scale does not come off with the chop stick. Borates will help to reduce the scaling also, but monthly checks will help prevent the large build up of scale.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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