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Thread: Newbie question about gallon per minute

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    Newbie question about gallon per minute

    I have 15,000 Gallon chlorine water pool, it is equipped with Pentair IntelliFlo variable speed pump (new pool 1 year old), my deep end is 5.5 feet and my shallow is 3 feet.
    How can I calculate my Gallons per minute in different speeds ?

    Thanks in advance

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Newbie question about gallon per minute

    Welcome to TFP!!!

    Why do you think you need to know the GPM? It is actually not a trivial thing to try to estimate.
    FYI, the most efficient speed as far as $/GPM is around 1000 RPM.

    Perhaps this will help answer your question:
    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!

  3. Back To Top    #3

    Re: Newbie question about gallon per minute

    Thanks for the reply,
    the reason I want to know the GPM is to make sure I circulate the pool water on a daily basis, my pump is set to 1400RPM for 11 hours, I have 15,000 gallon, and if I knew how many Gallons per minute my pump circulates at that speed, I can calculate the daily gallons.

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    Seanhan's Avatar
    Join Date
    Mar 2013
    Fort Worth Texas

    Re: Newbie question about gallon per minute

    The documentation for you pump should give you a approx idea
    Some pumps have g.p.m. On the data plate.
    Sean Hannon
    30,000 Gallons gunite pool Coated by Fibertech
    Hayward Pro Grid 72 / Hayward multiport
    Circupool V3 VS pump
    CirCupool SWG RJ 60, 400.000 btu raypak , Built in SPA

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    linen's Avatar
    Join Date
    Jul 2010
    Twin Cities, MN

    Re: Newbie question about gallon per minute

    Welcome to tfp, pacman72

    Most pools do not need a full turnover per day (and a few need more). How long the pump needs to run is really controlled by your comfort with your pools clarity and other factors such as heating or method of chlorination, etc. Definitely take a look at the link jblizzle pointed you to above.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  6. Back To Top    #6

    Re: Newbie question about gallon per minute

    Thank folks ! Appreciate your help !

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