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Thread: lost over 6 lbs of cya

  1. Back To Top    #1

    Join Date
    May 2009
    Trenton NJ

    lost over 6 lbs of cya

    I started testing my cya last monday and found out it was 30ppm, so I put in 6 lbs 11 ounces of stabilizer (sock method) tonight i tested it and its 30ppm. So I lost everything to back washing, oh i just remembered we had a terrible storm last night and i had to empty gallons of water.

    I need to start over, the ironic thing is the water is crystal clear. My chlorine is only 2 ppm. Do I need to shock if the water is looking good or just add some to bring it up?
    20,000 gallon viking fiberglass pool w/aqua comfort heat pump, pentair whisperflo pump 1.5hp autopilot dig-220 swg w/RC42 cell (42,000), pg2000 fiber optic lights
    hayward sand filter(medium is echoglass)
    Blue diamond robot cleaner

  2. Back To Top    #2

    In the Industry

    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: lost over 6 lbs of cya

    Just add some to bring it up, then do an overnight test.

    You shouldn't have to shock necessarily. If your CC is .5 or higher or the FC isn't holding overnight, then you should probably shock.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    Perfectly Clear Pool Service, Find me on Facebook!

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