UVC-pond clarifiers irradiate the water in a flow-through reactor with UV rays. The UV-C radiation destroys the swimmig algae. The algae agglutinate to large particles and ca be easily removed by means of mechanical filtering. UVC clarifiers modify the tertiary and the quaternary structure of the algae proteins by means of UV-radiation. This means the destructions of the algae which can be removed from the water by pond filters. The water circulates through the two inlets of the UVC-clarifier and in the process all impurities like algae, bacteria or parasites are reduced. The more this circuit is maintained the more effective is the germ reduction. UVC-power : 24 Watt UVC: Pond Size : 45000 litre Input voltage : 230VAC ~50Hz