Increases total alkalinity.

Balanced hot tub water starts here — and FROG® makes it simple. Featuring our exclusive FROG TruDose Cap™ for precise measuring and clear dosing instructions printed right on the bottle, you can dial in your water chemistry with confidence and zero guesswork. Total Alkalinity is the foundation of balanced water, helping prevent sudden pH swings and allowing every other water care step to work more effectively. Test first, adjust as needed, and relax in crystal-clear comfort. The ideal range is 80–120 ppm — and with FROG, getting there is easy, accurate, and stress-free.