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Thread: Hayward ProGrid 72 sq. ft. Filter

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    Seanhan's Avatar
    Join Date
    Mar 2013
    Fort Worth Texas

    Hayward ProGrid 72 sq. ft. Filter

    MY ProGrid D.E. Filter say's to add 9 lbs of D.E. ( sticker on tank )
    The book say's 9 lbs also, I have read from many sources that say 72sq ft needs 14 lbs ???
    Who is correct ???
    Sean Hannon
    30,000 Gallons gunite pool Coated by Fibertech
    Hayward Pro Grid 72 / Hayward multiport
    Circupool V3 VS pump
    CirCupool SWG RJ 60, 400.000 btu raypak , Built in SPA

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Hayward ProGrid 72 sq. ft. Filter

    I would be inclined to follow the manufacturer recommendation in this case.
    I think typical is 1 pound per 8 sqft; although I have also seen 1 pound per 10 sqft. Never seen the larger number you posted.

    Remember after only a backwash you only want about 80% of the full amount also.
    Jason, TFP Moderator
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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Hayward ProGrid 72 sq. ft. Filter

    Hayward. Use 9 lbs on a fresh fill or after manual cleaning. If you only backwashed, only 7.2 lbs. (80%) since it never ever completely comes clean with backwashing alone.
    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.
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