Hot Tub Chlorine Calculator
Calculate exactly how much chlorine your hot tub needs.
Quick tips
Ideal chlorine for hot tubs: 3–5 ppm. Run jets 15–20 minutes after adding chemicals, then re-test.
Calculate exactly how much chlorine your hot tub needs.
Ideal chlorine for hot tubs: 3–5 ppm. Run jets 15–20 minutes after adding chemicals, then re-test.