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Pristine Blue Pristine Alk Up (2 lb) increases the alkalinity level of your pool or hot tub. Proper total alkalinity levels help prevent pH drift.
1.5 lb per 10,000 gallons of water to raise alkalinity level by 10 ppm.
2 oz per 400 gallons of water to raise alkalinity level by 20 ppm.
For use in pools:
Measure total alkalinity of the pool with a reliable test kit or test strip. If total alkalinity is below 50 ppm add the recommended dosage. Broadcast this product over the surface of the pool water. Keep the circulation pump running. Retest the total alkalinity level after 4 hours. Repeat treatment as necessary until alkalinity is in the acceptable range of 50 to 90 ppm.
For use in spas and hot tubs:
Measure total alkalinity level with a reliable test kit or strips, if total alkalinity level is below 50 ppm add the recommended dosage. Pre dissolve this product in a bucket of water and then add to the spa water. Keep water circulating and retest water after a minimum of 30 minutes. Repeat treatment, as necessary, until total alkalinity level is in the Pristine Blue acceptable range of 50 to 90 ppm.
Sodium Hydrogen Carbonate