Eclipse Discharge, Large, 240 V. 50hz, (C-08/4)Proven to kill up to 99. 99% of bacteria, viruses and molds found in pools as well as other organic contaminants, the only by product of ozone disinfection is oxygen. The most powerful, naturally occuring oxidizer that can safely be used in a swimming pool or spa, ozone is faster, safer and 200 times more effective than chlorine. Chlorine produces a by product called chloramine which is known to form trihalomethane (a suspected carcinogen). Ozone