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Thread: Can I add Diatomaceous Earth to any sand filter?

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    Can I add Diatomaceous Earth to any sand filter?

    My apologies if this has been discussed before. Can I add DE to ANY sand filter, or does it have to be a specially designed filter? If I can, what is easiest way to do it?

    15,000 gal + Spa 500 gal, Fiberglass, SWG, Pentair variable speed pump, Pentair Easy Touch, Aqua Cal heat pump

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    borjis's Avatar
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    Re: Can I add Diatomaceous Earth to any sand filter?

    You can, just make sure it's pool grade DE and NOT food grade, which would make a cloudy mess of your water.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
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    Mod Squad JVTrain's Avatar
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    Re: Can I add Diatomaceous Earth to any sand filter?

    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Mod Squad kimkats's Avatar
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    Re: Can I add Diatomaceous Earth to any sand filter?

    I have a link for you:

    Pool School - Add DE to a Sand Filter

    I have done it and LOVE the polished look of the water.

    Just make sure you can babysit the pool for a couple of hours until you see how much DE YOUR filter likes. Some only like 2 Tablespoons and mine likes 1.5 cups!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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