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Thread: First pool store test

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    Join Date
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    First pool store test

    Hello, I had been testing my water with a cheap drop kit(holding out hope TF test kit
    will ship to Canada soon)
    I have been adding liquid chlorine or bleach each night, stays stable through the
    night but burns off very quickly during the day. Water looks good and clear.
    I have a 16x32 inground vinyl 16,500gal?. Hayward sand filter full sun.
    Here are my test results
    PH 7.9
    Total Alkalinity 60
    Calcium hardness 80
    Total Disolved Solids 500
    Free Chlorine 0 was 2 before I went to pool store
    Total Chlorine 0 see above
    Stabilize 0

    I am thinking I need to get some stabilizer in the pool then raise my Alkalinity.
    I will be adding a SWG and solar pannels within a few weeks. How should I proceed?
    Thanks ,very helpful bunch!
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

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    Backglass's Avatar
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    Re: First pool store test

    Quote Originally Posted by haybird
    I am thinking I need to get some stabilizer in the pool
    You are thinking correctly! Think of CYA (stabilizer) as "Chlorine Sunscreen". Without it, a pool can go from shock level to zero in a few bright sunny hours...as you have learned.

    With a CYA level around 20-30 you will be astounded at how much longer your chlorine lasts.

  3. Back To Top    #3

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    Thanks, if I start to raise my stabilizer tonight. Should I try to raise my alkalinity tomorrow.
    Just not sure if you can add different chemical within short periods of time. From what I read
    it will take a week to get the stabilizer up. Is it ok to add stabilizer at the skimmer slowly?
    How slowly. Thanks
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

  4. Back To Top    #4
    JasonLion's Avatar
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    You can pour stabalizer into the skimmer fairly quickly, a steady stream but not just dumping it in. Keep in mind that when you add stabalizer to the skimmer you can't backwash for the next week. The alternative is to put the stabalizer into a sock and put the sock in the skimmer.
    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

  5. Back To Top    #5
    Backglass's Avatar
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    Quote Originally Posted by JasonLion
    The alternative is to put the stabalizer into a sock and put the sock in the skimmer.
    I found that putting the CYA into a gym sock and hanging by a string in front of my return worked well. Still it's very slow dissolving.

  6. Back To Top    #6

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    Thanks for the tips. I always thought my pool was around 22,000gallons.
    I used the calculator I found here on a thread. The pool store test says its
    16,500. Its a 16x32 oval with a 8ft deepend(any guesses). I don't want to add too much
    stabilizer should I go with the 16,500?.Can I start to add baking soda tomorrow
    to raise my alkalinity? Thanks again
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

  7. Back To Top    #7
    JasonLion's Avatar
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    I get 18,000 gallons. Sizes are always approximations.

    You can go ahead and raise the alkalinity. You don't want to raise alkalinity or raise PH at the same time as adding calcium.
    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

  8. Back To Top    #8

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    JasonLion: I just found your calculator very handy,Thanks.
    My calcium in my vinyl is 80 is it really nessesary to raise to 150?
    Thank-You
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

  9. Back To Top    #9
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    You don't need calcium in a vinyl liner pool, although it doesn't hurt at reasonable levels. Leaving at 80 will be fine.
    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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