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Thread: Is there a preferred order to adding ingredients/chemicals?

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    Is there a preferred order to adding ingredients/chemicals?

    When balancing the pool, is there a preferred order to adding the different components?
    Date of Build: Dec, 2009 near Atlanta; 17000 gal; IG vinyl; SWG w/ sand filter; Hayward Super Pump 3/4HP

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    Richard320's Avatar
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    Re: Is there a preferred order to adding ingredients/chemica

    That depends entirely on the readings. If there's low chlorine, it gets taken care of first. But if there's no chlorine and it needs to be SLAMmed, then pH gets adjusted first. And if CYA is way high and a partial drain is called for, it makes no sense to balance things only to pump it out a day later.

    High TA is the last thing you worry about. Low TA might need to be addressed early on so the pH adjustment goes smoother.
    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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    Re: Is there a preferred order to adding ingredients/chemica

    Just coming off a successful SLAM. Here are my numbers

    CYA 80 (measured before SLAM)
    FC 20 (now dropping after SLAM)
    CC 0
    TC 20
    pH ? (not measured yet due to high FC. Tends to rise and hasn't been checked since before SLAM - 3 weeks)
    TA 90
    CH 320
    Salt 3800 (from TF-100 test kit but pool equipment reads 2900)
    Date of Build: Dec, 2009 near Atlanta; 17000 gal; IG vinyl; SWG w/ sand filter; Hayward Super Pump 3/4HP

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    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: Is there a preferred order to adding ingredients/chemica

    When the FC drops below 10, adjust the pH if needed, then wait for FC to drop to 6 or 7 and turn on the SWG. You're through the hard part. Now it's mostly just check and adjust pH every few days and fiddle with the setting on the SWG to maintain FC between 4 and 6.
    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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