12lb Box Hit Hard Nu-Clo Shock

Nu-Clo Hit Hard is a fast-acting, 4-in-1 granular pool shock containing 68% calcium hypochlorite, designed to destroy algae, bacteria, and contaminants while restoring crystal clarity within 24 hours. It is suitable for weekly maintenance, reduces chlorine odor and eye irritation, and will not over-stabilize pool water. 

Key Features and Benefits

High Concentration: Contains 68% available chlorine for powerful sanitization.

– Fast-Acting: Rapidly eliminates bacteria and stubborn algae blooms.

– Clarifier: Clears cloudy and discolored water quickly.4-in-1 Action: Kills bacteria, destroys algae, shocks, and clarifies.

– Safety: Does not increase cyanuric acid (stabilizer) levels and won’t fade vinyl liners.