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Thread: Early Season Chemistry

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    Join Date
    Jan 2016
    Location
    Southern CT
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    27

    Early Season Chemistry

    To protect my 1yr old pool, I want to keep my CSI in a healthy place. To do that it seem my pH and TA need to be at their upper limit. However, I was under the impression that I should keep the pH and TA on the lower end of the recommended range for a SWG. As the weather gets warmer (and the water), it appears that the CSI will be easier to control.

    In the interim what is recommended, lower pH & TA or marginally higher CSI?

    Also, due to early season cold temperatures I am chlorinating my pool with bleach rather than the SWG. I am sticking with SWG Pool chemical goals because I assume they account for salt. If this is a mistake and I need to adjust CYA down until it gets warmer, please give me a head's up.

    Thank you for any advice you have to offer.


    FC 6.5 (bit high added bleach last night - too cold for SWG)
    pH 7.5 (goal 7.5-7.8)
    TA 70 (goal 60-80)
    CH 410 (goal 350-450)
    CYA 70 (goal 70-80)
    Borate 30 (30-50)
    Salt 3200
    Temp 53f
    CSI -0.59 (goal -0.3 to 0)
    36K gal IG Diamondbrite, IntelliFlo VSOM 3HP Pump, Clean & Clear Plus Cartridge Filter, HeatPro 140K BTU Heat Pump, AquaRite AQR15 SWG, Built 1/16-4/16, no H20 restrictions; Hotspring Limelight Flair 310 gal hot tub

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    20,312

    Re: Early Season Chemistry

    I wouldn't do anything different. Your pH is going to creep up a little naturally, which will send the CSI the right direction. Warmer water will also shift it. Just be patient and let nature take its course.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad Jimrahbe's Avatar
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    Jul 2014
    Location
    Bedford, TX
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    9,319

    Re: Early Season Chemistry

    Reb,

    Most SWG pool like their pH to around 7.8. In your case letting your pH come up to 7.8 gets your CSI into the recommended -.3 to +.3 area.

    Letting your TA come up to 100, gets your CSI to -.06, which is perfect...

    Personally, my pool will often stay at a pH of 7.8 for several weeks at a time. If I bring it down to 7.5 or so, it will stay there for only a few seconds...

    As long as your pH is stable I would ignore the TA, unless it is way way out of range.

    Thanks for posting,

    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.

  4. Back To Top    #4

    Join Date
    Jan 2016
    Location
    Southern CT
    Posts
    27

    Re: Early Season Chemistry

    Thanks! I can work with this.
    36K gal IG Diamondbrite, IntelliFlo VSOM 3HP Pump, Clean & Clear Plus Cartridge Filter, HeatPro 140K BTU Heat Pump, AquaRite AQR15 SWG, Built 1/16-4/16, no H20 restrictions; Hotspring Limelight Flair 310 gal hot tub

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