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Thread: Water Temp Offset

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    H2O_Keeper's Avatar
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    Water Temp Offset

    My son has a birthday the end of April and I will really be pushing things having the water ready that early in the season for us. The outside temps may be decent (late 70's) but I will have to fire up the gas heater because the ground and my pool water will be in the 50's.

    I dont want to turn the heat on until within a few days of the party (gas prices). I need to balance ahead of time. Is it sufficient to just bring in samples of water and let them get to room temperature before testing? Are there any caveats that will happen balancing at one temperature but testing at another?
    21K Gal, IG, Vinyl, Bleach-Borax-Baking Soda, 3/4HP Hayward pump, Hayward sand filter, 200,000BTU Heater, TF100 Testkit
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    budster's Avatar
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    Re: Water Temp Offset

    Chem Geek can give a better answer, but in general, no major difference. Keep you sample bottle tightly closed, because if you take a sample an let it sit too long, your readings may be off.
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    JasonLion's Avatar
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    Re: Water Temp Offset

    You should do the chlorine and PH tests right away. You should wait for the water to warm up before doing the CYA test. You can do the TA and CH tests right away or wait, but it takes more swirling to mix after each drop when they are cold.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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