Pond UV Sterilizer Aquarium Light Diving Supplies Fish Tank Lamp for Algae Removal and Water Disinfection --Suppresses harmful microorganisms in water --Helps prevent bacterial growth and algae buildup --Promotes clearer, healthier water conditions --Independent power switch for safer operation --Utilizes ultraviolet irradiation to disrupt the DNA of microorganisms, reducing their ability to reproduce and effectively controlling algae and pathogens in water --Constructed with high-quality materials for increased durability --Features a waterproof insulated tail and multi-stage sealing ring suitable for underwater use --Suitable for various applications including fish tanks, garden fountains, ponds, and aquaculture systems Warning: 1. This device emits ultraviolet light, which can be harmful to humans. Avoid direct exposure to eyes and skin. Do not look directly at the UV source. Never expose living organisms to direct UV irradiation. 2. Recommended usage is approximately 2 hours per session. Do not operate continuously for more than 6 hours. 3. The UV sterilizer must only be used within a filter chamber. Do not place directly in an open aquarium as prolonged UV exposure may harm or kill fish.