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Thread: Has Anyone Successfully Removed

  1. Back To Top    #1

    Join Date
    Apr 2015

    Has Anyone Successfully Removed

    The white scale that develops on fiberglass pools? I saw an acid bath post from 2010. Has anyone ever tried it? I've searched old threads, but haven't seen any recent posts of discoveries to remedy this problem. Have manufacturers changes their production to avoid this in future molds? Anyone know anything new?

  2. Back To Top    #2

    TFP Guide
    cowboycasey's Avatar
    Join Date
    Jul 2013
    Fletcher, OK

    Re: Has Anyone Successfully Removed

    Most of the time it is scaling from an unbalanced pool, could you post up your numbers from your test kit

    How does your CSI look in poolmath?
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  3. Back To Top    #3
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Has Anyone Successfully Removed

    Scale develops in all types of pool, vinyl, plaster and fiberglass. Scale develops from high PH, TA and/or CH. Keeping your CSi between -0.3 and +0.3 will prevent scale. You can lower your CSI to -0.5 to -0.6 and brush the pool a lot. It will dissolve slowly over time, about as long as it took to develop. There is a no drain acid wash process that can be done. But, I am not that familiar with the process or how it might impact a fiberglass pool.

    More here, Pool School - Calcium Scaling
    And here, Langelier and Calcite Saturation Indices (LSI and CSI)
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