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Thread: Refilling a fiberglass pool

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    Refilling a fiberglass pool

    I just drained and refilled my fiberglass (over plaster) pool because the CYA was very high. Should I follow the start up procedures for new plaster pool or something else? Here are the current numbers.

    FC 1.5
    pH 7.5
    TA 30
    CH 40
    CYA <30
    30,000gal. IG pool - applied fiberglass over gunite when pool was remodeled, cartridge filter, 1HP pump, 100 gal/min flow rate

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    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Houston, Texas

    Re: Refilling a fiberglass pool

    If the plaster is old and cured well I would think you just follow procedures like you were opening the pool for the first time for the year. Just make sure your water is balanced and you should be good to go!
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Refilling a fiberglass pool

    It sounds like you have a fibreglass pool, regardless of what's underneath.

    Fill 'er up! You need more chlorine in there than you currently have. at least 3-4ppm.

    You also need more least 30-40ppm.

    Post back if you need help with how much to add.

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    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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