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Thread: What time of day do you aim to have "optimal" FC?

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    Join Date
    May 2016
    Walla Walla, WA

    What time of day do you aim to have "optimal" FC?

    Just wondering about everyone's theory on what time of day you would want your FC to be at target level. I like to add my bleach in the evening out of convenience. If my target FC is 8 and I am at 7 at the end of the day, I generally add 1 full gallon which brings my FC up ~3ppm - putting me at 10 overnight and somewhere around 6-7 the following night depending on bather load, temp, pollen, etc. Is this how most folks do it, or would you just put enough in to get you to target level overnight and let the FC fall where it will during the day? Perhaps I am overthinking this process altogether...
    20'x40' rectangle vinyl in-ground ~35,000 gal. Diving board. Dolphin Nautilus Robot. Century USQ1102 1HP w/ 1.25HP Service Factor. Sta-Rite SuperMax pump. Hayward Pro Series high rate sand filter. Jandy LRZ heater. Intermatic T104R timer running 9 hrs/day on 2 cycles. Taylor K2006 test kit w/ Taylor 9265 Speedstir. and a skimmer sock!

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: What time of day do you aim to have "optimal" FC?

    My timer kicks the pump on about 4:30. So testing and dosing are somewhere between 5:00 and 5:30. It's had time to mix before testing and it still has some time to mix after dosing.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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