BAOSHISHAN UV Disinfection System 10 GPM UV Sterilizer for Water Purification Pond Its the UV ray technology adapted to this system, no harmful chemicals need to be added. UV is an environmentally friendly alternative to chlorine disinfection and has no disinfection byproducts The bactericidal efficiency depends on the transparency, impurity and temperature of the water body, with a minimum of 99.9%. 304 or 316 polished stainless steel reactor, quartz sleeve to ensure optimum working temperature. It would take you less time on installation as the compact design and simple components. Water flows through the system without need for holding tank or reaction times.