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Thread: A few quesitons, CYA, chorine and sand from filter in pool

  1. Back To Top    #1

    Join Date
    Jul 2009
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    a few miles south of New Orleans Louisiana
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    A few quesitons, CYA, chorine and sand from filter in pool

    Hi all,

    Just opened pool and had to add CYA since I drained and refilled just before closing to find and patch a hole. I have the solid CYA in a sock bobbing in front of the return, enough to get the CYA level up to around 30 or so.

    A few questions

    How long should it take to dissolve?

    Also, can I add bleach while it is dissolving?

    Lastly I am getting sand from the filter on the bottom of the pool. I have vacuumed a few times and it keeps returning to the bottom of the pool. What can I do to fix or prevent this from happening?
    12 x 24 6800 gallon Voyager LX AG pool, 1.5 HP motor with sand filter, solar cover and a TF-100 test kit.

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
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    11,965

    Re: A few quesitons, CYA, chorine and sand from filter in pool

    Yes, you can add bleach. I expect it will dissolve within 24-36 hours depending on the flow. YOu can squeeze/manipulate the sock with your fingers to speed up the dissolving....

    Sounds like something inside the filter maybe loose or cracked allowing the sand to get thru. You'll have to open it up and check to see if the parts are all intact and working properly. Are you sure it's sand?
    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
    http://www.PerfectlyClearPoolService.com

  3. Back To Top    #3

    Join Date
    Jul 2009
    Location
    a few miles south of New Orleans Louisiana
    Posts
    16

    Re: A few quesitons, CYA, chorine and sand from filter in pool

    Just to add the water is clear I don't see any algae other than some sand on the bottom of the pool. I'm running the filter all the time right now.

    FC 15 on Friday as I shocked that morning with some leftover trichlor and tested that evening, 0 as of yesterday evening. I have a few leftover pucks in the automatic chlorinator which I assume is adding at night and then depleating in the sun. I'll add bleach if it's safe.
    CC .5
    Ph 7.5
    CYA 0 before I put the sock in it. I'll test CYA again next weekend.
    12 x 24 6800 gallon Voyager LX AG pool, 1.5 HP motor with sand filter, solar cover and a TF-100 test kit.

  4. Back To Top    #4

    Join Date
    Jul 2009
    Location
    a few miles south of New Orleans Louisiana
    Posts
    16

    Re: A few quesitons, CYA, chorine and sand from filter in pool

    Pretty sure it's sand. It has a greyish beige color and it appeared within an hour of turning my filter on for the first time.
    12 x 24 6800 gallon Voyager LX AG pool, 1.5 HP motor with sand filter, solar cover and a TF-100 test kit.

  5. Back To Top    #5
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,965

    Re: A few quesitons, CYA, chorine and sand from filter in pool

    Sounds like you have a handle on things
    Good luck with the filter-hope it's nothing too serious.
    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
    http://www.PerfectlyClearPoolService.com

  6. Back To Top    #6

    Join Date
    Jul 2009
    Location
    a few miles south of New Orleans Louisiana
    Posts
    16

    Re: A few quesitons, CYA, chorine and sand from filter in pool

    Thanks, I'll tackle the filter this weekend.
    12 x 24 6800 gallon Voyager LX AG pool, 1.5 HP motor with sand filter, solar cover and a TF-100 test kit.

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