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Thread: Hard water and Scale

  1. Back To Top    #1

    Join Date
    Jun 2010
    Location
    Scottsdale, AZ
    Posts
    11

    Hard water and Scale

    Hello all. We're about to have our new pool ans spa completed. This is not my first one, and I have used the BBB method in the past for maintenance - although I didn't know it had a name - I just thought it was me being ultra cheap .

    Anyway, our fill water is very hard and I was wondering if there's anything else aside from good maintenance that I can do to help reduce scale buildup. We will have a water sheer and a bubbler in the pool, but I opted for no rock water fall as they always scale up a lot here. In addition, I've added a salt cell to the pool and and interested in protecting that as much as possible too.

    Is there anything I can do now, or after the pool is complete to reduce scale? Do magnets on the line actually do anything, or are they just a way to extract money from wallets?

    Forgot to add my specs:
    12k gallon in ground pool w/spa.
    1.5 hp pump, cartridge filter
    Salt cell
    Pebble Sheen interior
    27k Inground Pool/Spa
    Pebble Tech interior
    Dual 2 hp pumps
    Cartridge Filter
    Salt Cell Chlorinator

  2. Back To Top    #2
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: Hard water and Scale

    1. You could try to get water trucked in that has low CH[/*:m:3e9yuxp7]
    2. You could get Reverse Osmosis service done to lower CH.[/*:m:3e9yuxp7]
    3. Scaling is caused by having a high Calcite Saturation Index (CSI).
      This measurement is a combination of CH, TA, pH, CYA, and temperature.
      Obviously you can't control temp, and CH is more difficult, but you can purposely maintain low TA and keep pH on the low end of the range.[/*:m:3e9yuxp7]


    You can determine your CSI with Jason's pool calculator.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  3. Back To Top    #3
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,965

    Re: Hard water and Scale

    Read the Start Up new Plaster article in Pool School - the key to your situation is to keep your PH under control with Muratic Acid. Annd if the CH is truly an issue, consider alternative source for fill water or R/O.
    Where are you located, and have you tested the fill/tap water yet?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  4. Back To Top    #4

    Join Date
    Jun 2010
    Location
    Scottsdale, AZ
    Posts
    11

    Re: Hard water and Scale

    Great advice - I had forgotten about Saturation. It's been 5 years since I've had a pool, so I'm a little rusty. I do remember adding a good amount of acid to get the PH down to around 7 or less and aerating to bleed of some of the calcium off as CO2. It seemed to help lower the TA. Do you guys still use this technique?
    27k Inground Pool/Spa
    Pebble Tech interior
    Dual 2 hp pumps
    Cartridge Filter
    Salt Cell Chlorinator

  5. Back To Top    #5
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: Hard water and Scale

    Quote Originally Posted by mlaspina
    Great advice - I had forgotten about Saturation. It's been 5 years since I've had a pool, so I'm a little rusty. I do remember adding a good amount of acid to get the PH down to around 7 or less and aerating to bleed of some of the calcium off as CO2. It seemed to help lower the TA. Do you guys still use this technique?
    The technique you describe is exactly how we lower TA. This will not lower calcium. CO2 is Carbon Dioxide...no calcium.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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