Shock Treatment for Spas & Hot tubs.
Use when first converting your pool to Pristine Blue. Pristine Extra shocks & oxidizes those impurities out of the water. Plus it helps provide a better, more successful Pristine Blue experience.
100% soluble, 99% sodium di-chloro. No pre-mixing required.
Cold Weather Caution!: In cold climates, store your PristineBlue Bacteria Suppressant in a warm (over 50° F) place to avoid freezing. Freezing will cause the active ingredients to separate and render the product ineffective. Other Pristine Blue products are OK in cold temperatures.