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Thread: Need correct info regarding Pump size and filter size for AG pool

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    Need correct info regarding Pump size and filter size for AG pool

    I have a 18x33 Oval pool around 14,500 gallons.
    My 2HP motor went down and I have a 22" sand filter. Question is to replace new motor could I go with a 1 Hp or a 1 1/2 hp.
    If I wanted to replace both could I go with a 18" filter and a 1 Hp motor?
    Not sure how much water I need to be moving GPM? I was told about 30 but not sure.

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    pwrstrk's Avatar
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    Need correct info regarding Pump size and filter size for AG pool

    Welcome to TFP !
    I would keep your present filter and go with a 1 HP 2 Speed pump. The Hayward Power Flo Matrix is a very good pump. Lots of folks on the forum use it along with myself. You would save a lot in your electric bill by running the pump on low speed 90% of the time.
    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: Need correct info regarding Pump size and filter size for AG pool

    Welcome to TFP!!!

    For a pool your size, I would not go smaller than the 22" sand filter. I agree a 1HP 2-speed would be a good pump for you.

    The flow rate really does not matter. Check out: Determine Pump Run Time

    And please add your location (City, State or City, Country) to your profile and pool details to your signature as described HERE as it will help us help you.
    Jason, TFP Moderator
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    Re: Need correct info regarding Pump size and filter size for AG pool

    OK, ordered me one, thanks.
    I have had a couple local pool shops tell me that a 1HP is not strong enough for my pool. They may just be trying to up-sell me. I guess I will find out.

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    Mod Squad jblizzle's Avatar
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    Re: Need correct info regarding Pump size and filter size for AG pool

    Pool stores and builders always seem to sell pumps that are too big and filters that are too small ... a horrible combination.
    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
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    n240sxguy's Avatar
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    Re: Need correct info regarding Pump size and filter size for AG pool

    They apparently think the water needs to churn instead of just circulate. They want you to have an 18X33 whirlpool tub.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Cool Re: Need correct info regarding Pump size and filter size for AG pool

    Quote Originally Posted by jblizzle View Post
    Pool stores and builders always seem to sell pumps that are too big and filters that are too small ... a horrible combination.

    Yep, I assumed that was the case. Thanks for your assistance.

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    Re: Need correct info regarding Pump size and filter size for AG pool

    OK, I just want to confirm that the 1HP 2 speed will be strong enough to circulate the 18x33 oval pool especially the opposite end that tends to develop algae in the heat of summer.

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    pwrstrk's Avatar
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    Need correct info regarding Pump size and filter size for AG pool

    Yes it will be fine.
    Make sure your FC is range for your CYA level to prevent algae. Brushing the area that has seen algae if it gets poor circulation will help greatly also. You can also run the pump on high speed for an hour to help out.
    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: Need correct info regarding Pump size and filter size for AG pool

    Wow I just installed it, this thing on high is moving water a whole lot better than my 6 yr old 2 HP and a lot quieter. Thanks for the suggestions.
    Now time to get the levels all straightened out.

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    pwrstrk's Avatar
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    Re: Need correct info regarding Pump size and filter size for AG pool

    Glad to see your happy with your purchase. You won't regret it. It's a top notch pump. It will move some water on high. Nice job !
    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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