Feature: 1. Principle: When the water flows through it, it is briefly irradiated by 254NM strong band UV, which destroys the DNA of the organism, causing it to lose its reproductive ability and cause death. 2. Purify Water: When the UV are irradiated in a straight line, the water circulates continuously, and some bacteria and algae in the water are eliminated, thereby restoring a healthy water environment. 3. High Performance: Aquarium UV light has a long life and low light decay. The quartz tube made by a special process has high light transmittance and can destroy bacteria in a short time. 4. Safe and Efficient: Aquarium nano UV light has high efficiency algae removal, and the shell is designed with UV protection, without radiation, and without harm to the human body. 5. Multifunctional: UV water clarifier is a professional aquarium UV algae removal lamp that eliminates planktonic algae and moss, purifies water quality and improves ecology. Specification: Item Type: Aquarium UV Light Material: Anti UV Engineering Plastic Size: Approx. 11.5 x 12cm/4.5 x 4.7in Power: 3W Application: Fish Tank, Aquarium Algae Removal Germicidal Lamp Applicable: Freshwater and Seawater Can Be Used Plug Specifications, Voltage: US Plug 100-240V. Package List: 1 x Aquarium UV Light2 x Fixing Rings Note: Please allow some errors due to manual measurement.