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    tf-100 test results

    first time with tf-100 was disappointed didn't include phosphate test. 325 CH 60 CYA (First time testing maybe incorrect) 2.0 FC 0.0 CC 120 TA 7.9 PH does TA need to be adjusted for CYA? any adjustment i should make? thanks
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    which cya tube comes in tf-100 test kit

    https://tftestkits.net/TF-100-Test-Kit-p4.html big or little? CYA View Tube with black dot at bottom of tube
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    pool water issues.

    hi, pool is in Cincinnati, Ohio 8500 vinyl liner with sand filter and pool heater. What can i due to get more free chlorine? FC 0.94 TC 5.99 PH 7.4 TA 77*ADJUSTED FOR CYA CYA 61 PHOSPHATES 234 TDS 700
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    PH levels for above group vinyl pool with pool heater.

    what PH should I keep the pool water at to avoid destroying the heater?
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    newbie here

    Hi, have a 9,000-gallon vinyl above ground pool with a heater in Cincinnati, Oh; Joined due to pool store advising me to raise my CYA to 90. just drained a portion of water to get CYA down. Excited to learn.