In The Swim Alkalinity Increaser for Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 5 Pounds

In Swim Alkalinity Increaser maintains pH and chlorine levels.

Prevents pH swings, maintaining stable water chemistry.

High pH causes skin rashes; low pH stings eyes.

Ensures refreshing pool water, even in hot summers.

Maintain alkalinity at 90-120 ppm.

Add 1.5 lbs per 10,000 gallons to increase by 10 ppm.