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Thread: Cannot clear water

  1. Back To Top    #1

    Join Date
    Jul 2015
    Location
    Attica, NY
    Posts
    2

    Cannot clear water

    Hey everyone,

    My TF-100 kit came in earlier this week. As soon as I got it, I started SLAMing the pool. At first I was losing lots of FC overnight and during the day. During the day was because I had no CYA in the pool.

    I have most everything adjusted and everything seems stable but I can't get the water to clear. See numbers below

    FC - 14.5ppm - still SLAMing, a bit higher. Lost 0.5 ppm over last nights OCLT.
    CC - 0
    pH - 7.5
    TA - 90
    CH - 100
    CYA - 30

    I dont really know where to go from here. This is our first pool and we are ready to tear it down. Seems like all we do is fight with it. Please help!
    5k round AG - 42" deep
    Hayward 50lb sand filter - S144T1540S
    Hayward 40 GPM Pump - Single Speed SP1540CFP
    Built before 2011

  2. Back To Top    #2
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: Cannot clear water

    Welcome to TFP!

    If I read this correctly you have passed OCLT and 0 CC.

    It may be time to try a little DE powder to your sand filter to help it filter finer particles. Sand filters actually filter better as they get dirtier so don't be too quick to backwash it.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

  3. Back To Top    #3

    Join Date
    Jul 2015
    Location
    Attica, NY
    Posts
    2

    Re: Cannot clear water

    Tim.

    You did read that correctly. I will see if I can find some DE today and follow the steps to add it to my filter. I try to wait until the flow rate drops significantly before back washing.

    5k round AG - 42" deep
    Hayward 50lb sand filter - S144T1540S
    Hayward 40 GPM Pump - Single Speed SP1540CFP
    Built before 2011

  4. Back To Top    #4
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Location
    Columbia, SC
    Posts
    8,495

    Re: Cannot clear water

    Do you have a pressure gauge on your filter? Backwashing should always wait until pressure rises 20-25% above clean pressure.

    Pool School - Add DE to a Sand Filter
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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