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For use with Granular Chlorine. Keep your spa water balanced with regular testing. These strips test Total Hardness, Free Chlorine, Total Alkalinity, and pH. Recommended water balance with Granular Chlorine: Total Hardness 150 – 250 ppm Free Chlorine 3 – 5 ppm (1-3 ppm with spa frog mineral stick) Total Alkalinity 80 -120 ppm pH 7.2 – 7.8 (7.5 ideal) Bottle contains 50 test strips.
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🇺🇸 Ship from USA · On Agora since 2026
$11.99