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this is a new pool. finished filling it last monday - took 4 days using well water. initial test results were FC - 0 TC - 0 pH - 6.8 TA - 40 CH - 50 CYA - ? we drink the well water, its clear, and tasteless, quite good. am wondering why the ph is so low at 6.8. any ideas? today i'm going...

this is a new pool. finished filling it monday - took 4 days using well water. initial test results were FC - 0 TC - 0 pH - 6.8 TA - 40 CH - 50 CYA - ? tuesday night i added 500 grams of a granular chlorine with 70% available chlorine. revised test wed. am results were FC - 3 TC - 6 pH...