line-height: 20.8px;Walmart UV Light Sterilization Lamp, Submersible Ultraviolet Sterilizer for Aquarium Fish , Pond, 13W, AC110 120V This product, with UV sterilization function, can keep fish and bright effectively. It's very simple for use and with great effects. Features: filament for high performance and energy-saving. Adopt explosion proof tube for high transmission of ultraviolet ray. Powerful suction cups for adjusting position freely. Safe water-proof design for totally submersible use. Independent switch is great for safer use. Suitable for controlling malignant bacteria in aquarium and fish . Specifications: Wattage: 5W / 7W / 9W / 11W / 13W (Optional) Voltage: : AC110-120V Body Material: Cable Length: Approx. 150cm / 59in *Product Size(D * L): 5W/7W: 20 * 177mm / 0.8 * 6.97in 9W: 20 * 220mm / 0.8 * 8.66in 11W/13W: 20 * 240mm / 0.8 * 9.45in Product Weight: 5W/7W: 125g; 9W: 134g; 11W/13W: 144g *Package Size(L * W * H) 5W/7W: 23 * 7.5 * 4cm / 9.1 * 2.95 * 1.57in 9W: 26 * 7.5 * 4cm / 10.2 * 2.95 * 1.57in 11W/13W: 28 * 7.5 * 4cm / 11 * 2.95 * 1.57in Package Weight: 5W/7W: 168g; 9W: 182g; 11W/13W: 190g Notice: 1. sterilizer should be placed in filter , can't put it in fish directly. 2. product is for submersible use. 3. In use process, please cut off supply and stop using immediately if lamp enters water. 4. ultraviolet radiation will cause direct harm to human skin and eyes, please don't expose to use. Usage Suggestion: Please choose suitable lamp according to size of your fish and filter-. 3-4 times for a week, do not use it exceeds 2 hours per day; please according to actual situation. Package List: 1 * Aquarium UV Sterilizer Lamp 2 * Suction Cups line-height: 20.8px;line-height: 20.8px; filament for high performance and energy-saving. color:#c0392b;Adopt explosion proof tube for high transmission of ultraviolet ray. Powerful suction cups for adjusting position freely. Safe water-proof design for totally submersible use. Independent switch is great for safer use.