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Thread: phoshates

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    What causes my pool to continue to be high in phosphates even after I have used 6 liters of phosfree? I use well water, does this cause the phosphates to be high?

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: phoshates

    Welcome to TFP!

    Depending somewhat on your pool size, it is fairly easy to have a phosphate level high enough to require far more than 6 liters of phosfree.

    There really isn't any point in worrying about the phosphate level. My phosphate level has been in the thousands for years without any problems at all. As long as you maintain appropriate FC levels it doesn't make any difference if there are phosphates in the water or not.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: phoshates


    As Jason said above, you will find thousands of people on this forum that never test for phosphates and never worry about them. Phosphate levels are not important to a well managed pool.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Join Date
    Apr 2009
    Burlington, ON, Canada

    Re: phoshates

    Are you using a sequestrant with phosphonic acid in it? I researched if this would lead to phosphates in the water and I 'think' the answer is yes, but I don't really understand chemistry. Maybe chemgeek or someone more knowledgeable than me can chime in.
    16x28 Roman, 55000 litres, salt water, Zodiac Duoclear 130 (mineral cartridge removed!!!), inground, vinyl liner
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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: phoshates

    The thing to remember is, phosphates are algae food, as long as you have no algae it does not matter how much phosphates you have in your water.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Ohm_Boy's Avatar
    Join Date
    May 2007
    Orlando, FL

    Re: phoshates

    Don't sweat it. Focusing on phosphates to control algae is like getting rid of all your possessions to eliminate burglary. Just maintain the FC and you'll not only have no algae, you're water will be sanitary too.
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

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