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Thread: sand filter and fine dirt

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    Join Date
    Aug 2009
    Location
    SF Bay Area (Lamorinda), CA
    Posts
    122

    sand filter and fine dirt

    Pool water looks clear and blue until I start raking, vacuuming and brushing the plant debris and fine dirt off the bottom and sides of the pool. Did the overnight FC drop test yesterday and FC dropped from 6.0 to 5.5 so I don't think it's algae. Using liquid chlorine and had been using some tabs b/c we just resurfaced last year and had fresh low-CYA water but will be de-pucking now that CYA is around 40
    Numbers from this a.m.:
    FC 5.5
    pH 7.6
    TA 80
    CH 340
    CYA between 40 and 50

    We have a Hayward 244S sand filter. Sand was changed about 3 years ago. Any tips on getting the dirt out? I saw a few other posts that mention using the garden hose to clear up channeling and stuff - could someone pls. describe that process in a bit more detail? Thanks!
    1950's-era 17K gallon formerly fiberglass, newly replastered IG rectangle (~15x30'),
    Hayward S244S Sand Filter with Franklin Electric 0.75 HP motor and WhisperFlo WFE-3 pump
    Clear ThermaTex bubble cover
    Manual vacuum

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: sand filter and fine dirt

    Take the top of filter off. Gently move a hose down and around in the sand. This will break up any clumps and all the gunk will float up out of the top of the filter. Do this until the water seems mostly clean. Put the top back on.

    Might be worth doing this "deep clean" every year or so.

    If you are struggling to remove fine particles from the water, you could add a little pool DE through the skimmer into the filter to help.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3

    Join Date
    Aug 2009
    Location
    SF Bay Area (Lamorinda), CA
    Posts
    122

    Re: sand filter and fine dirt

    thanks!
    1950's-era 17K gallon formerly fiberglass, newly replastered IG rectangle (~15x30'),
    Hayward S244S Sand Filter with Franklin Electric 0.75 HP motor and WhisperFlo WFE-3 pump
    Clear ThermaTex bubble cover
    Manual vacuum

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    chiefwej's Avatar
    Join Date
    Jun 2011
    Location
    Tucson
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    2,853

    Re: sand filter and fine dirt

    Even better than DE would be a handfull of Fiber Clear added through the skimmer. I switched me DE filter over to Fiber Clear and the results are amazingly clear sparkling water.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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