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Thread: Pool Calculator Corrosive ?

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    Pool Calculator Corrosive ?

    Here are my numbers for this am.

    FC.....4.0
    CC....0.0
    TC....4.0
    pH....7.5
    TA....85-90
    CH.....180 (approx)
    CYA....60
    Salt.....4200 (a bit higher than we typically like, but oh well)

    When I input these number into TPC, it comes up with corrosive -.49. Everything in the pool has been really stable. TA dropped a bit with the rain, but still within a good range.

    The only thing I can adjust would really be the pH to get my corrosive number down a little bit. I can add CH, but it seems adjusting the pH has a bigger impact on the corrosive # than the CH anyway.

    So is a corrosive number of -.49 something to be concerned about where I should adjust my pH to 7.7 and hope that it remains steady there?

    Thx.
    18x36 IG Vinyl Grecian Lazy L (20k gallons) ~ Whisperflo DS 2.0HP pump ~ QuadDE100 filter ~ Autopilot SWG DIG-60 ~ (7) 4x16 solar panels

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
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    Re: Pool Calculator Corrosive ?

    You don't need to worry about that since your pool is vinyl.

    You're numbers look good
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: Pool Calculator Corrosive ?

    Cool, Thanks!

    Now I see that only "negative" affects plaster, stone, pebble, etc. And anything great than a "positive" .6 is not good for anyone. I wasn't concerned about the pool per se, but more the equipment.

    Thanks again!
    18x36 IG Vinyl Grecian Lazy L (20k gallons) ~ Whisperflo DS 2.0HP pump ~ QuadDE100 filter ~ Autopilot SWG DIG-60 ~ (7) 4x16 solar panels

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    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: Pool Calculator Corrosive ?

    Quote Originally Posted by nupoolsoon
    I wasn't concerned about the pool per se, but more the equipment.
    The pH is really the only thing to watch as far as the gear is concerned. In the normal range you'll be fine.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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