Blue Shield: Alkalinity Increase 5LB

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The Blue Shield Alkalinity Increaser will help you raise Total Alkalinity in your pool or spa while keeping your pH levels the same. This 5 lbs. bucket makes your pH and chlorine l evels easier to control and balance for safe, healthy pool water. Active ingredient: 100% Sodium Bicarbonate Use when total alkalinity drops below 80 ppm For use in pools, spas, and hot tubs Keeps pH and chlorine from becoming unstable Granular form, easier to apply into your water Dosage: 1-1/2 pounds per 10,000 gallons will raise the alkalinity level approximately 10 ppm. Spa Dosage: 1-2 oz. per 500 gallons. Retest water after every dosage added, You can swim after 4 hours of circulation Show more