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Thread: When do you recharge your DE filter?

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    Join Date
    Jul 2014
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    When do you recharge your DE filter?

    I was under the assumption after every backwash/rinse cycle you should recharge (my filter needs 6 pounds).

    PB says when the pressure gauge doesn't fall back down after the backwash/rinse cycle, then you know to add DE, i.e. you may go through several backwash/rinse cycles before needing to add DE.

    Which is it?
    20x40 L-shape 35k gallons, Pentair FNS 60 SQFT DE Filter, Pentair Multi-port Valve, Hayward Super Pump w/1 glorious HP, Vinyl Liner, Dolphin Z5, TF-100 w/Speed Stir

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    Mod Squad jblizzle's Avatar
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    Re: When do you recharge your DE filter?

    Use and Care of DE Filters
    DE Filter Cleaning Tutorial

    You always add DE after a backwash, but usually only around 80% of the full charge. You should tear it completely down once a year.
    We recommend a backwash/cleaning when the pressure rises 20-25% over the clean pressure.
    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
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    Re: When do you recharge your DE filter?

    Thanks jblizzle. I don't know how I missed that link. I just dumped 80% into it again.
    20x40 L-shape 35k gallons, Pentair FNS 60 SQFT DE Filter, Pentair Multi-port Valve, Hayward Super Pump w/1 glorious HP, Vinyl Liner, Dolphin Z5, TF-100 w/Speed Stir

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