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    Is this algae or sand/dirt?

    we’ve had a lot of rain/wind over the last week. Ran the dolphin robot last night, pool was clear after that and today morning I see this. Is this dirt or algae? Had added shock last night as FC was at 2 ppm (cya 30)
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    HI

    Hi all, new pool owner here. We bought a house in New Jersey which came with an in ground pool and was closed when we bought. Hired a pool guy to open it for us, but trying to balance all the chemicals is daunting! i got a TF-100 test kit and its been fun (and frustrating! at times) to test the...
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    FC too low

    hi all, New pool owner, had a pool guy open it for us. The water is clear (maybe not crystal clear). FC on test strip doesnt register anything at all. tested with TF-100 test kit, FC was very low 2 days ago (1.5). CC was 5. pH was high as well (7.9). Got it tested at a pool store as well, they...