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Thread: small green spots on bottom of pool

  1. Back To Top    #1

    Join Date
    May 2012
    New Jersey

    small green spots on bottom of pool

    Water is clear but have small green splothes on floor ,is this algae? I shocked and vaccumed and it is better but still see a little -how long do I hold the shock level?
    PH 7.8 CYA 30 TA 140 FC 5.5
    12,900 Gal. 24' X 48" ABG Vinyl Round
    Hayward Sand Filter
    Using BBB Method

  2. Back To Top    #2

    In the Industry

    Join Date
    Feb 2012
    Phoenix, AZ

    Re: small green spots on bottom of pool

    It is very likely this is algae. As far as shocking, the number of days is different for every pool. You want to shock until you have clear water, pass the OCLT test, and less than 0.5ppm CC.

    How are you currently testing your water? It would be smart to check out Pool School and read the article 'How to Shock your Pool'

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