Introducing the 1.5 lbs Bottle of Sodium Bisulfate, pH Lower. A balancing solution for maintaining the perfect pH and Alkalinity balance in your swimming pool or spa. This high-quality pH down is designed to help lower the pH level or Alkalinity level in your pool, ensuring a safe and comfortable swimming experience for you and your loved ones.

Dosage: 1 lb (16 oz) Lowers pH from 7.8/8.0 to 7.2 in 10,000 Gallons.

Use 1 lb of Sodium Bisulfate for every one thousand gallons of water in order to lower Alkalinity by 40ppm.