Hign-concerned Chemical : None Power : 5W Fixure : In Water Origin : Mainland China Type : fish Origin : Guangdong Capacity : 5-11 Size : 175mm/175mm/210mm/210mm Weight : 0.22kg Switch Type : Manual Lighting : uvc Voltage : 110-220 Llighting Keep Time : 16 to 24 hours This product sterilizes and removes algae by emitting ultraviolet rays. Please do not observe it directly with the naked eye. Direct exposure will damage the eyes and skin of people. Please pay attention to protection. The germicidal lamp can only be used in the filter tank, and it is forbidden to directly irradiate organisms. UV Germicidal Lamp Fish Tank Germicidal Lamp Sterilization Lamp Uv Ultraviolet Disinfection Lamp Algae Removal Disinfection Lamp Features: Efficient algae removal, sterilization Applicable voltage: 220-240v/90-110v Power: 5w, 7w, 9w, 11w, 13w; Suitable fish tank size: below 50cm, below 90cm, below 120cm, below 200cm, below 250cm; Plug: National standard, American standard, European standard. Model Weight Size UVC-5 0.2kg 8*4.5*26cm UVC-7 0.2kg 8*4.5*26cm UVC-9 0.22kg 8*4.5*26cm UVC-11