12 x 350g - Powerful active oxygen shock treatment with a chlorine boost. Use weekly to rid pool water of non-filterable wastes, restoring water sparkle and comfort while providing a gentle boost to the chlorine residual. Contains a blend of oxidizers, clarifiers and water enhancers for optimal performance. Ideal for use with chlorine sanitizers. Recommended as Step 1 of the PureWow Pool Care System.
Shocking a spa means applying an ample dose of chlorine (sodium dichlor) or non-chlorine shock (potassium monopersulfate or MPS). One purpose of this treatment is to break-down organic waste contaminants which cause odor and cloudy water. After treatment, water quality and clarity is often completely restored.