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Thread: Verify the correct CH target...

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    Question Verify the correct CH target...

    Here's where I'm currently at:

    Test Reading
    FC (ppm) 5.5
    CC (ppm) 0.0
    pH 7.6
    TA (ppm) 70
    CH (ppm) 190
    CYA (ppm) 75
    Salt (ppm) 2000
    SWG (ppm) 2700
    Temp 62

    According to the water balance documentation, CH needs to be around 350-450. Just got back from my local pool store where they were saying it really shouldn't be much above 200. Yes, they know I have a plaster pool. Which is it and what's your best guess as to why the other source is saying otherwise?

    Rich - 21k gal IG pool/spa, pebble, completed Sept 2016, no water restrictions
    - Hayward: EcoStar pump, SwimClear C5030 cartridge filter, T-CELL-9 sanitizer, H400FDN heater, ProLogic controller
    - Acc: Polaris Vac-Sweep 280 Black Max F5B cleaner, Hayward 6060 booster pump, Taylor K-2006/K-1766

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    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Bedford, TX

    Re: Verify the correct CH target...


    Look at your CSI...

    Using your numbers above you are at -.76 or corrosive

    Increasing your CH to 450 drops you to -.34 and increasing your pH to 7.8 gets you in the -.16 range...

    You only have two choices.. believe the Pool Store or us... and remember, we are not trying to sell you anything...

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Verify the correct CH target...

    Pool School - Recommended Levels

    There's our answer. Best guess on their answer?............cause it's their "best guess".
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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