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Thread: Adjusting TA, CH and CYA in new pool - how often to test?

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    AaronGo's Avatar
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    Adjusting TA, CH and CYA in new pool - how often to test?

    Simple question - I did another full round of tests yday with the TF-100 and my CH, TA and CYA were on the low side (generally higher than 1 week ago when I tested and added some chems to adjust). Should I re-test in another week and then add another round of chems as needed? Or should I re-test sooner?

    For yesterday's test results I did not add the full amount of chems to get to the suggested levels since the pool is new and would rather add the chems in phases.

    FC - 5.5 (using 6% bleach to chlorinate, working very well thus far)
    CC - 0
    pH - 7.2 (dropped pH a little before increasing TA, will re-test this afternoon and adjust accordingly)
    CH - 150 (this is low, was advised in another thread to get CH to 200 and then test monthly since the pool is new and CH should increase over time)
    TA - 40 (this is low, added enough baking soda to get it to 55, will re-test and add more soon)
    CYA - ~30 (this is low, but pool is new and got a lot of rain recently which I assume dropped CYA. Added enough to get CYA to 40, will re-test and add another round soon to get to 50)

    Thanks!
    18,000 gallon in ground, plaster - completed 6/29/12
    Jandy 340 sq ft cartridge filter
    Jandy variable-speed 2 HP pump
    Jandy LXi 400 heater
    Jandy Aqualink PDA-PS4

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    GreatCanadian's Avatar
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    Re: Adjusting TA, CH and CYA in new pool - how often to test

    Oops....think I misunderstood your question. It's been answered by the next poster.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
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    Re: Adjusting TA, CH and CYA in new pool - how often to test

    Keep an eye on your FC and pH. Those are the ones that are most important and can fluctuate in a short period of time. Once you have CYA and CH in range, you can check them just occasionally. TA, once in range, I check once per week.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    AaronGo's Avatar
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    Re: Adjusting TA, CH and CYA in new pool - how often to test

    Sorry, I was talking more about frequency of testing TA, CH and CYA. I am testing FC and pH daily

    But you answered my question as far as once I get my TA, CH and CYA in range. But until I get them in range, should I test those weekly or more frequently?
    18,000 gallon in ground, plaster - completed 6/29/12
    Jandy 340 sq ft cartridge filter
    Jandy variable-speed 2 HP pump
    Jandy LXi 400 heater
    Jandy Aqualink PDA-PS4

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    Re: Adjusting TA, CH and CYA in new pool - how often to test

    UNTIL you get them in range test them every evening after the sun is off the pool!
    Once they are in balance check cya, ch once a week and fc, ph daily in the evening about the same time preferrably because you will be manually adding bleach daily and ta about every 3 days
    18x52 intex ultra frame pool 6981 gallons, 1 HP LL pump with 19 in sand filter,BBB method,borax 50ppm
    leslies DPD test kit + fas-dpd chlorine test kit + borates test strips
    thru wall skimmer,hard plumbed with 2 returns 1 1/2 sch 40 pvc
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    AaronGo's Avatar
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    Re: Adjusting TA, CH and CYA in new pool - how often to test

    ok, thanks. another question related to this is how often do I want to add chems to adjust TA, CH and CYA? I think I can add daily for TA and CH until I get into range but CYA I would wait a little longer?
    18,000 gallon in ground, plaster - completed 6/29/12
    Jandy 340 sq ft cartridge filter
    Jandy variable-speed 2 HP pump
    Jandy LXi 400 heater
    Jandy Aqualink PDA-PS4

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