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Thread: How much DE

  1. Back To Top    #1

    Join Date
    Jul 2011
    Mesa Arizona

    How much DE

    A good friend bought a house here in Arizona just down the street from me and he isn't moving down from Oregon for a couple of months so I'm filling it, I got the chemicals about right, working on the SWG system and I cleaned the filters. It has a DE filter. I just go the water up to the skimmer so I'm ready to start filtering . In my pool, I have a sand filter and I'm unfamiliar with a DE filtration system so here are my questions.

    How much DE do I add?
    Do I mix it in a bucket or just pour the powder in?
    Do I just pour it in the skimmer or what?

    Thanks for all your help.
    Mesa Arizona. Old school 26,000 gallon in ground plaster pool with sand filter built in 1984.

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: How much DE

    The amount you add all depends on the filter model. We'll have to know that before we can even guess.

    You're supposed to mix the correct in a bucket of pool water and then slowly pour it into the skimmer so it goes directly to the filter.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Join Date
    May 2012
    london ontario

    Re: How much DE

    if your model is anything like mine, i put in 5lbs to start it, then 2lbs after every backwash, best bet is to look up your model on the net
    30,000 gal concrete
    10ft deepend 4ft shallow
    built in 56, filter and pump in the house!!! all brass lines

  4. Back To Top    #4
    tcat's Avatar
    Join Date
    May 2012
    Austin, TX

    Re: How much DE

    I "thought" that you are supposed to add 80% of the original amount. I have a 48" Pentair that takes initial 4.8#, so shouldn't 3.8# be added after each backwash?
    IG pebble, 15,000 gallon
    48” PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed

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