Pond UV Sterilizer Aquarium Light Diving Supplies Fish Tank Lamp for Sterilization and Algae Removal - Suppresses harmful microorganisms in water - Helps prevent bacterial growth and algae buildup - Promotes clearer, healthier water conditions - Features an independent power switch for safer operation - Utilizes ultraviolet irradiation to disrupt the DNA of microorganisms, reducing their ability to reproduce and effectively controlling most bacteria and algae in the water - Constructed with high-quality materials for enhanced durability - Waterproof design with insulated tail and multi-stage sealing ring, suitable for underwater use - Suitable for a variety of applications including fish tanks, garden fountains, ponds, and aquaculture systems Warning: 1. This product 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 live 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 or closed system. It should never be placed directly in an open fish tank, as prolonged UV exposure may harm or kill aquatic life.