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Thread: How do these numbers look?

  1. Back To Top    #1

    Join Date
    May 2013
    Fort Lauderdale, FL

    How do these numbers look?

    My screened porch/deck is under contruction so I've left my loop-loc security cover on the whole season so far. The pump & SWG (35%) are running 4hrs a day. Water is clear, but some stuff on the bottom since I only vacuumed once when I opened the pool in May (then put the cover back on)


    Date 5/14
    FC 13
    CC .5
    PH 7.2
    TA 80
    CH 190
    CYA 30
    Salt 2900

    Date 6/24
    FC 9
    CC .5
    PH 7.5
    TA 70
    CH 160
    CYA 50 (added 4 pounds)
    Salt 2900 (added 160 pounds to maintain)

    I'm concerned with the calcium harness. We've had a lot of rain and I added 11 pounds of "hardness" when I opened the pool but it's still dropping. What about the upward Ph shift? FC is still slowly working its way down from the opening SLAM process. I could drop the SWG % down a bit, but when the cover comes off soon, the sun will start working on that chlorine.
    45'x12' 17k gal, IG plaster, Pool Pilot Nano+ SWG, 1/2hp Whisperflo pump, PAC-FAB TA-60D sand filter, Raypak 266 heater
    Pool School + Test Kit + Pool Math = Trouble Free Pool

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: How do these numbers look?

    FC is a little higher than it needs to be, which also contributes to PH increase, so turn down the percentage.

    You can let the PH go higher. Try keeping it in the 7.5 to 7.8 range instead of lowering it that much.

    You definitely want CH up to at least 250, probably more like 300.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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