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Thread: When should a DE Cartridge filter be replaced?

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    Martin2003's Avatar
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    When should a DE Cartridge filter be replaced?

    Is there any signs (besides visual tears) or lifetime expectancy to determine when to replace the cartridge filters for a DE filter?

    My filter is a Pentair Quad DE 80 Filter.

    Thanks!
    Torben

    22,500 gallons IG gunite free form w/ spa, Tropical Breeze Pebbletec, Intelliflo Variable Speed, 2hp Whisperflo for waterfall feature, Intellitouch, Quad DE 80 Filter, Mastertemp heater, SWCG

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    Mod Squad Bama Rambler's Avatar
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    Re: When should a DE Cartridge filter be replaced?

    Tears or holes are the number one reason to replace them but when the cartridges have a higher than normal psi rise after a chemical cleaning means that the pores are permanently clogged and replacement should be considered.
    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

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    Re: When should a DE Cartridge filter be replaced?

    I just closed my pool and when I opened up my DE filter I was surprised to find lots of DE still inside. I had not taken the filter apart for 4 years, but I am glad I did this year. I did not see any tears, but I noticed a dark tan color to the previously white colored mesh. Is this something I should be concerned about? I too am wondering if I need to replace the guts of my Pentair FNS 60.
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    20,000 gal. DE In-ground 16x34 Gunite (2005) Jandy Saltwater Generator

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    Re: When should a DE Cartridge filter be replaced?

    A nice long soak in TSP or cheap powdered dishwasher detergent is needed there.

    Scptt
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: When should a DE Cartridge filter be replaced?

    I should add that the Quad's filter elements/cartridges get the same soaking treatment.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: When should a DE Cartridge filter be replaced?

    Thanks for the advice. I'll have to get a large plastic trashcan to soak the filter in. Should I dilute the TSP or dishwashing detergent with water?
    20,000 gal. DE In-ground 16x34 Gunite (2005) Jandy Saltwater Generator

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    Re: When should a DE Cartridge filter be replaced?

    It's hard to soak it in TSP or powdered dishwasher detergent without water.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: When should a DE Cartridge filter be replaced?

    soak away! those things should last a long time. My folk's is 20yrs old and working fine. Chemcially cleaned only a couple times.
    33k Gunite, CompuPool CPSC48 SWG, Sta-Rite System 3 DE, 2.25hp dual-speed, POOLVERGNUEGEN Pressure-side

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