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Spa Essentials Alkalinity Increaser provides spa owners with an effective way to raise spa alkalinity, which stabilizes a spas pH level. A stable pH level minimizes swimmer skin and eye irritation, helps improves water clarity, and prevents costly equipment damage from corrosion or scaling. Alkalinity Increaser's unique chemical composition enables users to enjoy their spa rather than worry about it.
Sodium Hydrogen Carbonate: 100%
This formulation of alkalinity increaser is the best I've used in twelve years as a spa owner. Use the guidelines on the bottle and reliably manage your spa's alkalinity. Stevie Sep 16 2016