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Thread: Getting Calcium Levels Right

  1. #51
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    Default Re: Getting Calcium Levels Right

    Quote Originally Posted by jmarcum View Post
    I don't understand how to change the CSI though. Are you saying if I hit all the all numbers the CSI will just fall in line?
    CSI is calculated based on the numbers you out in. You can play around with different chem levels and you will see CSI change. For example, try the numbers Toy suggested and see how it affects the CSI number.
    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

  2. #52
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    Default Re: Getting Calcium Levels Right

    Quote Originally Posted by JimK View Post
    CSI is calculated based on the numbers you out in. You can play around with different chem levels and you will see CSI change. For example, try the numbers Toy suggested and see how it affects the CSI number.
    What JimK said!
    36'x20' Freeform, IG - 13k gal, Spa - 800 gal, Diamond Brite, Intelliflo VS pump, TR-140C sand filter, Mastertemp 400k BTU heater, 2HP Whisperflo pump (waterfall), Pool Pilot Digital RC-42 SWCG, K-2006 Test Kit

  3. #53
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    Default Re: Getting Calcium Levels Right

    Great posts, guys!

    Yea, just try inputing different numbers. Like: if I raise my pH, my new CSI is ___. If I raise CH, and raise/lower pH, my CSI is ___. Play with the numbers until something makes sense for your pool.
    26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO

  4. #54
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    Default Re: Getting Calcium Levels Right

    Edit to above: I noticed on your screen shot that you had several variables that you were adjusting. To experiment with CSI, keep your values the same for both current and target. Only change the target on one, maybe two parameters at a time. These are the parameters that matter: pH, TA, CH, CYA, Temp, and includes any Borates and Salt.
    26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO

  5. #55
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    Default Re: Getting Calcium Levels Right

    The easiest thing to change is PH because it is a one for one change. Increase PH by 0.5 increases CSI by 0.5. TA and CH changes have less impact.
    Mark
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  6. #56
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    Default Re: Getting Calcium Levels Right

    Quote Originally Posted by mas985 View Post
    The easiest thing to change is PH because it is a one for one change. Increase PH by 0.5 increases CSI by 0.5. TA and CH changes have less impact.
    Well, that's very interesting. Never noticed that before. Learn something new everyday.
    36'x20' Freeform, IG - 13k gal, Spa - 800 gal, Diamond Brite, Intelliflo VS pump, TR-140C sand filter, Mastertemp 400k BTU heater, 2HP Whisperflo pump (waterfall), Pool Pilot Digital RC-42 SWCG, K-2006 Test Kit

  7. #57
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    Default Re: Getting Calcium Levels Right

    I didn't notice that either, though I don't pay close attention to CSI since I have a vinyl lined pool.
    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

  8. #58
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    Default Re: Getting Calcium Levels Right

    Let us know if you need help figuring things out. We can play with your numbers if you give us a current set of test values!
    26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006C; OTO

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