SpaGuard Total Alkalinity Increaser | Spa Balancer Brand_Hearthstone Length in Inches: 3 1/2"

Length in Inches: 3 1/2"

You still need chlorine or MPS for oxidation (more on that below)

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steady level of chlorine to keep your water clean and clear between water changes

Heat & Glo and other Hearth & Home fireplaces

SpaGuard Total Alkalinity Increaser | Spa Balancer Brand_Hearthstone Length in Inches: 3 1/2"SpaGuard Total Alkalinity Increaser is a concentrated granular product that raises low total alkalinity in spa and hot tub water. Total alkalinity is the unsung hero of balanced water it's the buffer that keeps your pH steady. When alkalinity is too low, pH becomes unstable and starts swinging unpredictably with every chemical addition and every soak. That swing has a name: pH bounce, and it's one of the most common sources of water care frustration.