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Thread: What temp to use for calculating CSI ?

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    saraiks's Avatar
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    Jul 2007
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    What temp to use for calculating CSI ?

    There is a lot of variation in the day and night temperatures expected here in NorCal for this weekend. It is supposed to be at 75+ during the day and 50+ for the night. This is a 25 degree variation which produces two widely varying numbers for the CSI in the pool calculator. What number should be used to balance the pool ?
    16,000 G in ground Gunnite (plastered) with attached Spa, Gemini 3 NG Heater, Sta-rite cartridge filter, Aquabot Mark V, TF test kit

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    JasonLion's Avatar
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    You want to use the water temperature, which won't vary nearly as much as the air temperature. If you have both day and night water temperatures then average them.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    saraiks's Avatar
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    Thanks Jason..
    16,000 G in ground Gunnite (plastered) with attached Spa, Gemini 3 NG Heater, Sta-rite cartridge filter, Aquabot Mark V, TF test kit

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