Ultraviolet is accepted all over the world as a reliable, costeffective and above all environmentally friendly aquariumwater disinfection solution.UV-C radiation destroys the genetic structure of bacteria and Viruses, and inhibits their ability to multiply, rendering them harmless.UVC series full flow ultraviolet disinfectant device uses a special made high power ozone free ultraviolet germicidal lamp. The device is also equipped with a micro carbon austenite stainless steel barrel with a specially processed interior, while the exterior of the barrel is also specially polished. The result of this is the water passing the barrel would be radiated and receive 253.7nm (UVC) of ultraviolet with passing through the barrel, providing a excellent disinfectant effect.