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Thread: Intex sand filter psi

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    Intex sand filter psi

    I'm wondering at how many Psi a should backwash my clean pressure is 9psi and just now it's 10.5?
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    pwrstrk's Avatar
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    Re: Intex sand filter psi

    Usually when it raises between 20-25% of clean pressure.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    GreatCanadian's Avatar
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    Re: Intex sand filter psi

    Between 11 and 12 (11.5 would be perfect).
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: Intex sand filter psi

    U mean when it reaches 11.5 i should backwash?
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    Mod Squad jblizzle's Avatar
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    Re: Intex sand filter psi

    Yes. Backwash between 11 and 11.5.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Intex sand filter psi

    Ok thx.just checked again it's 10.

    In 2 weeks the psi only went 1 psi higher and it has been running 4 hours a day and vacuuming every 2 days
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    GreatCanadian's Avatar
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    Re: Intex sand filter psi

    Is your pool clear? I go longer than 2 weeks before my pressure increases 25%.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: Intex sand filter psi

    The pool is crystal clear
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    pwrstrk's Avatar
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    Re: Intex sand filter psi

    Don't sweat it. Just keep an eye on the gauge. I look at mine everyday.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Intex sand filter psi

    The thing is i have been vacuuming almost everyday for the past two weeks and the pressure gauge didn't move an inch and just today it moved to 10 psi
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    pwrstrk's Avatar
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    Re: Intex sand filter psi

    Yea but you started out at 9. You just got enough junk in there to raise it a bit.

    Unless your gauge is bad.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Mod Squad jblizzle's Avatar
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    Re: Intex sand filter psi

    If the water is clear, then chillax and don't worry about the pressure some only backwash once a year.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    pwrstrk's Avatar
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    Re: Intex sand filter psi

    Exactly. I have yet to backwash.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Intex sand filter psi

    Wow,i hope i shouldn't have to backwash that often because water here is crazy expensive
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

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    GreatCanadian's Avatar
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    Re: Intex sand filter psi

    Sounds to me like everything is working fine. Stick your hand in front of the return. Do that after backwashing as well. Keep doing and pretty soon you'll be able to tell when you need backwashing without even looking at the gauge.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: Intex sand filter psi

    Ok thx,i will go ahead and try that
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

  17. Back To Top    #17

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    Re: Intex sand filter psi

    Just cleaned the sand filter and wow the water from the waste port was a dark brown.
    I cleaned the filter when it had reached 15 psi and the water coming from the return has slowed down drastically,because i want to backwash as little as possible because water here is crazy expensive.

    Backwashed till the water in the side glass turned clear and then rinsed for 30 sec,now filter pressure is back at 10psi.

    So can i just backwash when it reaches 5psi above the clean pressure our should i do it wen it reaches 25%???
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

  18. Back To Top    #18
    Mod Squad jblizzle's Avatar
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    Re: Intex sand filter psi

    I would not go above 13psi because as you noted, the flow (and thus filtering) starts to dramatically decrease when you get above a 25% increase.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  19. Back To Top    #19

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    Re: Intex sand filter psi

    Ok thx
    Intex 15X48" /5300 galloms
    Intex 2650 sand filter
    Thru wall skimmer,
    FAS-DPD chlorine test kit K-2006
    Hard plumbed

  20. Back To Top    #20

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    Re: Intex sand filter psi

    using a cover, to keep debris out. along with a vacuum that utilizes a debris bag will cut down on your having to backwash as often too.
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

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