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    Looony2nz's Avatar
    Looony2nz Posts: 4, Reputation: 1
    New Member
     
    #1

    May 8, 2006, 06:13 PM
    Calcium needs / new pool HELP !
    Our pool (IG gunite, 10,500 gallons, Diamondbrite finish) is new and running for about a week and a half. Water chemistry is good after startup and we brought our water to be tested, all is well but calcium hardess is 150. Pool store said we will be needing calcium soon, but not to do it before we know about the warranty on the plaster? One month, two months.. etc.
    Pool company says something about not worrying about the calcium?? We know the level needs to be a bit higher... how long can I wait? How much needs to be added and how to properly add.

    Thanks...
    Shari in FL.
    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
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    #2

    May 9, 2006, 02:51 AM
    Calcium weakens plaster. Did you wait the recommended curing time before filling the pool?

    Definitely get a firm answer on the warrantee from the installer - hopefully in writing. Is the installer a "full service" pool company? If so, tell them you know that calcium weakens pool plaster and have them explain the correct balance for you...

    After clarifying this, go back to who tested the water and get their take on it all.

    The recommended range of calcium hardness is 150-1000, so for a plaster pool, you'll be wanting to keep it at the low end of this.
    Looony2nz's Avatar
    Looony2nz Posts: 4, Reputation: 1
    New Member
     
    #3

    May 9, 2006, 03:14 AM
    There was no waiting before filling... pool was plastered and filled immediately as I have heard so many people talk about. Didn't know that was NOT the way. (?? ) I will be questioning the PB again about the calcium. SO, it is at the low end which is good then. But my question was when and how to add when necessary.
    Thanks:confused:
    By the way, pool builder seems to be a full service co. I am going to prob. Call the guy that did our start up and pool school. He was fairly helpful.

    Thanks again.
    RickJ's Avatar
    RickJ Posts: 7,762, Reputation: 864
    Uber Member
     
    #4

    May 9, 2006, 03:35 AM
    I don't think you will learn bad news in all of it; just what it takes to keep it in good shape.

    And as for the level, continue monitoring. You may find that it maintains at the minimum level and that you won't even need to add it.

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