hygger Aquarium U-V Light with Timer, 360° Protective Shield Clean Light for Green Water Clean, Amphibian Aquarium Lamp Bulb for Freshwater Saltwater Fish Tank and Aquarium (5W, 10-40 Gallon)Brand: hygger Color: Black Features: Highly Efficient Cleaning: hygger aquarium U V light adopts a 254nm wavelength to effectively clean green water. Turning cloudy green water into crystal clear clarity. It is a good choice for freshwater and saltwater aquariums to clean water. U V Light Shielded Housing: hygger water clean lamp adopt closed plastic ring and tight structure, which makes the U V cannot travel through the protective casing, ensures no