Introducing 4.5 LB of Sodium Bisulfate, pH Lower. Ships in 3, 1.5 LB Bottles. A balancing solution for maintaining the perfect pH balance in your swimming pool or spa. This high-quality pH down product is designed to help lower the pH 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.