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Thread: DE Question

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    DE Question

    I have always been unsure of how much DE I should be putting in my filter. I have a Hayward Pro Grid and my pool is 36,000 gallons. I have been putting 5lbs in for initial charge and then 3-4 after a backwash. I have no idea if any of that is correct! Does anybody know?
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: DE Question

    It depends on the size of the filter. Hayward Pro Grid comes in 4 sizes, as far as I can tell. Somewhere there should be a label that tells you the model number. If we have that, it should be easy to find out how much DE you need.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: DE Question

    It is the 3620.
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: DE Question

    The manual says 4.5 lbs for initial coating. 80% of that would be 3.6 lbs after backwashing.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  5. Back To Top    #5

    Re: DE Question

    thanks!
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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