AquaChek Copper Test Strips, 25/Pack | 661454E Chlorinator Parts Inspect the union nut threads

Inspect the union nut threads and union body face for scoring or cracking while the connections are apart

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W3DE4820 Hayward ProGrid DE Filter 60 Sq

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Seal flaps are a routine wear item on suction-side cleaners — inspect yours at the start of each season

AquaChek Copper Test Strips, 25/Pack | 661454E Chlorinator Parts Inspect the union nut threadsAquaChek Copper Test Strips, 25 test strips per container. Tests for: Copper by ppm, 0 3 ppm range Copper test strips are designed for use with mineral purification or copper ionization systems. Maintaining proper copper levels will help eliminate bacteria and other contaminants. This tests copper only. Use in combination with your other AquaCheck test strips for your complete pool balance. Features and Benefits: Tests for Total Copper in pool water