Dazzle Ultra Shock 950g (For Pools)Dazzle Ultra Shock (950g) Shocking a pool 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. Uses clarifiers and water enhancers to make water clear and comfortable Use weekly to maximize chlorine (sanitizer)