SpaGuard Alkalinity Increaser Tabs | Rapid-Dissolve

SpaGuard Rapid-Dissolve Alkalinity Increaser Tabs raise total alkalinity in spa and hot tub water — the buffer that keeps your pH from swinging around — in a clean, drop-in tablet. They're a compressed, effervescent form of SpaGuard's sodium-bicarbonate alkalinity increaser, so instead of scooping powder you simply add the right number of tabs to the filter well and let the jets disperse them. Each tab fizzes apart and dissolves in just a few minutes. Total alkalinity is the quiet hero of balanced water. When it's too low, pH becomes unstable and starts to swing unpredictably with every chemical addition and every soak — the frustrating problem known as "pH bounce." That instability leads to cloudy water, equipment corrosion, and skin or eye irritation. Raising alkalinity into the proper range (80–120 ppm) stops the bounce at its source, stabilizes pH, protects your spa equipment and surfaces, and keeps the water comfortable. As a guide, 2 tabs per 250 gallons raises total alkalinity by about 30 ppm — precise, predictable, and far less messy than handling loose product. The 1.25 lb bottle gives you plenty of doses for the season. Pro Tip: Balance alkalinity before pH. Because alkalinity is the buffer that holds pH steady, getting it into the 80–120 ppm range first makes your pH far easier to set and keep there. Chasing pH while alkalinity is still low is exactly what causes the endless "bounce." Brand SpaGuard®