Weike 15W 1.8M IP68 Waterproof Aquarium Fish Tank UV Light Submersible UV Sterilizer Lamp US Plug UV lamp with strong effect of sterilization,ultraviolet ray transmitting rate of more than 93% Waterproof Level: IP68 Life keep up to 10,000 hours or more. Quartz tube & high-quality rubber parts & with strong sucker to firm installed. Power Plug with Switch on/off for conveninent & safety operating