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Thread: Gallons per inch

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    meatloaf's Avatar
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    Feb 2008
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    Gilbert AZ
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    Gallons per inch

    I'm trying to figure out how many gallons of water are in 1 inch. The pool is 420 square feet and I calculate that 1 inch equals 261 gallons. Is this correct? Anybody have a good formula / easy way to figure this out?
    Thanks
    My pool is a 10,500 gallon (420 Sq Ft ) kidney shape. A hand made sheer decent waterfeature. STA-RITE HRPB30, Sand filter 30" 98 GPM,
    1 HP Maxi-Glas 2 pump, BBB Method, Taylor K-2005 test kit, 50 Watt 12V low-voltage pond light illuminates the pool at night for a nice soft glow.
    250 gallon stand-alone hot tub. Got it FREE!

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Gallons per inch

    1 cubic foot = 7.48 US gallons. 420 square feet times 1/12 vertical feet is 35 cubic feet which is indeed around 260 gallons.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    meatloaf's Avatar
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    Feb 2008
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    Gilbert AZ
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    Re: Gallons per inch

    Thanks, I guess I did it right, although I think I took the scenic route to get the same answer.
    My pool is a 10,500 gallon (420 Sq Ft ) kidney shape. A hand made sheer decent waterfeature. STA-RITE HRPB30, Sand filter 30" 98 GPM,
    1 HP Maxi-Glas 2 pump, BBB Method, Taylor K-2005 test kit, 50 Watt 12V low-voltage pond light illuminates the pool at night for a nice soft glow.
    250 gallon stand-alone hot tub. Got it FREE!

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    In the Industry

    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Gallons per inch

    Well, that's an epiphany for me.........I realize now I took the "scenic route" in many of my math classes.........that suddenly explains a great deal about my adult life..
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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