Introducing the Aqua Ultraviolet Classic Lamp for Fish Tank (PN: A20057), the perfect solution for keeping your aquarium water clean and clear. This powerful 57 Watt lamp measures 17-3/8" and is designed to effectively eliminate algae and harmful bacteria in fish tanks of all sizes. The high-quality construction and long-lasting design make this lamp a reliable and efficient choice for aquarium maintenance. It’s easy to install, and the UV light technology ensures that your fish and plants thrive in a healthy and balanced environment. Say goodbye to murky water and hello to crystal-clear conditions with the Aqua Ultraviolet Classic Lamp for Fish Tank.