Keep your pool’s chemical readings in these ranges:

• PH: 7.2 to 7.8 (I generally keep it in the middle 7.5)
• Alkalinity: 80 to 120 ppm
• Calcium Hardness: 250-450 ppm
• Cyanuric Acid or Sun block: 30-50 ppm
• Chorine residual: 1.0 to 3.0 ppm
• Combined chlorine: 0 ppm. By managing pool chemistry right, you will substantially reduce the amount of chlorine needed. Much of it is wasted.