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Help, I just set up a salt water pool with sand filter. These are my pool readings after one shock treatment and two PH Down treatments. : r/swimmingpools
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Help, I just set up a salt water pool with sand filter. These are my pool readings after one shock treatment and two PH Down treatments. : r/swimmingpools
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HF Scientific Chlorine Micro Check Test Strips Free Chlorine:pH and Electrochemistry, | Fisher Scientific
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Restaurant Sanitizer Test Kit for Quaternary Ammonium (QAC, Multi Quat) 0-500 ppm & Chlorine 10-200 ppm Test Paper [2 Vials of 100 Paper Strips]: Amazon.com: Industrial & Scientific
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