Rapid-Dissolve Alkalinity Increaser Tabs

Drop-in tabs that dissolve in just minutes to help your spa reach ideal total alkalinity quickly and easily. Two tabs per 250 gal (≈1 000 L) raise alkalinity by 30 ppm—shielding equipment from corrosion, stabilizing pH and smoothing out pH bounce. Safer and less messy than liquid alternatives, these dry sodium bicarbonate-based tabs simplify water care—just add to the filter well and let the jets do the rest.

Size: 567g (approx. 30 tablets)