The Fresh 'n Clear Chlorine-free Shock Is a Powerful Way to Keep Your Pool Sparkling Clean. It Uses Oxygen to Kill Algae and Reduce Organic Waste. Use our Fresh 'N Clear Chlorine-Free Shock in your swimming pool and leave your water sparkling clean! This powerful shock uses available oxygen to eliminate contaminants, organic waste, chlorine orders and prevents algae while freeing up existing chlorine in your pool. It conveniently allows you to enter the pool within 15 minutes of adding the shock to your pool. Fresh 'N Clear is a quick-acting formula that dissolves fast in your pool, leaving you with more time to relax in it. This Non-Chlorine Shock allows you to clean your pool as an effective alternative to standard chlorine shocks. This means you get the same clean without adding high levels of chlorine that can irritate swimmers' skin and eyes. Safely, quickly, and effectively shock your swimming pool and achieve clear water with our Fresh 'N Clear Chlorine-Free Pool Shock. Our Fresh 'N Clear Chlorine-Free Shock comes in multi-packs for ease of use as you eliminate contaminants, organic waste, chlorine odors, and prevent algae while freeing up existing chlorine in your pool. Dosage: 16 oz per 10,000 gallons. - Chlorine-free shock - Eliminates contaminants and organic waste - Eliminates odors - Prevents algae - Frees up existing chlorine - Fast dissolving - Non-chlorine shock doesn't change pH levels - Safe to swim in 15 min. - Works in chlorinated and brominated pools