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Thread: sand in pool

  1. Back To Top    #1

    Join Date
    Aug 2010

    sand in pool

    I am in the process of shocking my pool and the water remains cloudy. I have not done an overnight test yet but plan on doing it tonight. My biggest concern is that I see sand at the bottom of the pool more concentrated where the returns are. Is there a reason as to why this would be happening? We had a small amount last year, but this year it seems to be more. Also, in the past years we have had very high cya levels. Last year we had it at about 50 or 60 and now the first reading and subsequent ones have shown zero. I am scared to add cya due to the fact that we had issues with it. Can I add sticks and turn them up in order to get cya into pool? If I can how long do I wait to recheck it. Any help with my questions is deeply appreciated. Thanks!
    31,000 gallons, sand filter, pro series S244T24,vinyl liner,

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: sand in pool

    Sand can be blown in, or coming from a broken sand filter. One way to be sure which is happening is to tie a stocking over one of the return jets. If sand collects inside the stocking there is a problem with the filter.

    What test are you using to measure CYA? (Strips, black dot, etc)
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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