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Thread: How are my numbers looking?

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    How are my numbers looking?

    FC 8.5
    CC .5
    TC 9
    ph 7.2
    TA 50
    CH 800
    CYA 75
    Borates 80
    Salt 3800 ppm

    The salt cell is running at 70 percent for 7 hours.

    I'm thinking my chlorine is a little high, but I'm not sure. Following the advice of others on here I'm trying to keep my ph and ta on the low side due to the ridiculously high calcium content of my fill water.

    Thoughts? The water is nice and clear for what it's worth. Mainly I'm wondering about the chlorine level.
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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    Smykowski's Avatar
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    Re: How are my numbers looking?

    FC is slightly high, but still well within the range of normal. You could probably dial back the % or the runtime (or some combination) to bring it a bit lower, but not below the 5-ish range.

    What is your water temp? Because of your high CH level, you probably want to pay attention to CSI, and right now yours looks too low (pending water temp). You probably want to keep your pH closer to 7.5 and bring the TA up to about 75 or so.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: How are my numbers looking?

    I'm not running the heater now, so the water temp is about 70 or so.
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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    Smykowski's Avatar
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    Re: How are my numbers looking?

    That brings your CSI to -.72, which is too low. Bump the pH to 7.5 (I'd do it with washing soda....aeration will be too slow) and bump the TA to 80. That will bring CSI to around -.2.

    Most people can ignore CSI and just use TFP recommended ranges. Because your CH is so high, you will have to pay attention to how the parameter affect each other and keep your CSI tighter to 0.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: How are my numbers looking?

    So just to be clear my csi goal should be 0?
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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    Smykowski's Avatar
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    Re: How are my numbers looking?

    For a plaster pool, you want your CSI between -.6 and +.6; loosely aim for 0, but if you end up a little on either side of it, don't sweat it. When you start pushing the .35 or .4 range, probably want to do something about it.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: How are my numbers looking?

    Thanks for the feedback!
    17.5K inground plaster pool/spa, Aquapure PLC 1400 SWG, Jandy stealth 1.0 hp pump, 1.5 hp booster pump, Jandy 60 sqft DE filter, 400,000 btu heater, Zodiac MX 8 cleaner

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