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Thread: New fiberglass pool, quanity chem to balance?

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    New fiberglass pool, quanity chem to balance?

    19,800 gallon. Will have pump running tomorrow. Pool has ET w/ IC40. I have 500 lbs salt on-hand. How much bleach and CYA should I have on-hand to start process of balancing pool?
    N Virginia
    -Leisure Moroccan 38' Fiberglass
    -19,800 Gallons
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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: New fiberglass pool, quanity chem to balance?

    I would purchase enough CYA to get to 40-50ppm. Enough bleach to get to 4-6ppm just to start. Additionally, I would add one large jug of bleach into the pool tonight after the sun is off the pool just to kill off anything that might start to grow before you get into balance
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: New fiberglass pool, quanity chem to balance?

    Dave and I are on the same page, I just took the swcg into account. The first thing to do is test the pool water and post the results.

    Use the pool calculator to figure out how much CYA and bleach you need to get to 70 ppm CYA and 3 ppm FC. Add that and the salt the first day. Add enough bleach the second day to get to 3 ppm FC in the evening. You can turn on the swcg the third day if everything else is within reason.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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