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  1. #1
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    Default Re: Phosphate testing

    So what's the current thinking on using phosphate removers?

    I use to use one at the end of every season, but last year I stopped doing it since it seemed the message here was that they are a waste of money.

    Now I see more discussion about possible benefits of removing phosphates. I'm sure my pool has phosphates since I add 6 oz of Jack's Magic Purple stuff each week to keep stains from appearing on the steps (interestingly, the bucket metals test recommended here was negative for any metals).

    So, should I resume my annual phosphate treatment or is phosphate removal only recommended for "problem pools"?

    For reference my pools stays clear and CL holds overnight. I keep FC 5-6ppm and CYA 70-80 (recommended CYA level for my SWCG).
    22'x40' Grecian Lazy L 20K gal IG vinyl pool; Aqua Rite SWCG T15 cell; Hayward Pro Grid 6020 DE filter; Hayward Superpump 1hp pump; 12 hrs; Taylor K-2006; city; PF:6

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    Default Re: Phosphate testing

    Right now, I'm working on the theory that you don't need PO4 removers, unless you need them, and that there are 2 groups that may need them:

    1. Those with pools prone to recurrent mustard algae, and

    2. Those taking long or repeated vacations, and who lack anyone to check on their pool every few days.

  3. #3
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    Default Re: Phosphate testing

    It's interesting how this thread has morphed from testing for phosphates to testing the whole need to do so in the first place. I guess the answer (for me anyway) is it doesn't seem likely the effort is worth it. I'll just keep my FC at the upper end of the best guess chart, raise the CYA to about 60 and see how it goes.

    It has been worth the effort to discuss the idea here. Thanks for all the expert info.

    Happy 4th all

    Splash
    19.5k gal, 16x32 vinyl liner, sand filter, 1hp single speed pump, K-2006 test kit. PF=6

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    Default Re: Phosphate testing

    That's a good plan. I find the persistent algae point is inside my wedding cake stairs. Water circulation is almost non-existent there and it's impossible to get inside it to brush--but you can see inside.
    Carl

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    Default Re: Phosphate testing

    Quote Originally Posted by Big Splash View Post
    I guess the answer (for me anyway) is it doesn't seem likely the effort is worth it.
    Happy 4th all
    Thanks! You, too!

    Regarding the question of whether phosphate level control is "worth it", if
    (a) you don't have problems with persistent algae in spite of good chlorine levels, and
    (b) you aren't having difficulties keeping your pool clear and clean during vacation or other absences,
    then you probably don't have a reason to fool with it.

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