Description: - Suppress harmful bacteria in water. - Prevent bacterial growth and algae breeding. - Keep the water clear. - Independent power switch is great for safer use. - By ultraviolet irradiation, the DNA of the microorganism is destroyed and its reproductive ability is lost, and most of the bacteria and algae in the water are killed, thereby restoring healthy water. - Made of materials, more durable. - The tail is made of insulating material to make it waterproof and more secure. The multi-stage sealing ring can be used for diving. - The scope of application is not only fish tanks, but also rockery fountains, fish ponds and aquaculture. Specifications: - Wattage: 5W/7W/9W/11W/13W/15W/18W/22W - Plug Type: EU - Voltage: 220V - Body Material: Quartz Glass - Lamp Length: 20cm(3W/5W/7W) , 23cm(9W/11W/13W) - Cable Length: Approx. 210cm Package Included: 1 x lamp tube 1 x sucker 1 x controller 1 x power plug Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.