Aquatop Submersible Pond UV Sterilizer with Pump + Fountain KitAQUATOP UVFK Series UV Pumps with fountain kits are a perfect and versatile method to eradicate and control free floating micro organisms that cause the unsightly green water as well as disease causing pathogens in both your fresh & saltwater aquariums. The versatility of these fully submersible UV Pumps also allow for applications in your outdoor garden ponds. Unlike conventional UV Sterilizers which need the addition of a pump and extra plumbing,