SpaGuard's Total Alkalinity Increaser provides spa owners with a simple, effective treatment to combat too low spa alkalinity, which if left untreated can cause corrosion damage, weaken your sanitizers ability to keep your spa clean, and cause skin and eye irritation. Total Alkalinity Increaser's formula reverses these affects, as well as stabilizing your spas pH level to prevent pH bounce that can give spa owners headaches. Once applied, you can spend more time enjoying you spa rather than maintaining it.