CNZ All-in One Pond Filter System with 13W UV Sterilizer 660 GPH Pump Fountain Kits

13-watt ultraviolet sterilizer - kills free floating algae, bacteria and parasite 3 fountain water feature attachments Adjustment valve for regulating flow to fountain head and/or auxiliary water feature Includes a large coarse filter foam that water must pass through first and also three bio filter media baskets The unit is designed to run submerged so you do not have to worry about disguising it as you would with external filtration systems