Quick & Effective Water Clarification: Achieve crystal-clear water in just days with our 18-Watt UV-C light UV pond filter with 2500L/H flow rate, rapidly eliminating algae & harmful microorganisms Ideal for Medium Ponds: Perfect for ponds & tanks up to 20,000 liters (5,283 gallons), making our UV lights for ponds suitable for outdoor fish ponds & decorative water features Durable & Weather-Resistant: Built to endure, this UV water sterilizer features a robust, UV-resistant casing & waterproof seals, providing reliable performance even in harsh outdoor conditions Easy Installation: Set up your ponds filtration system quickly & easily with our UV pond light compatible with most pond pumps & filtration systems, allowing hassle-free integration & fast results Energy-Efficient Performance: Enjoy powerful sterilization with minimal energy consumption with our pond UV lights for outdoor ponds, designed to run efficiently while it keeps your pond clear