The Aqua Ultraviolet Advantage 2000 Barb x Barb Unit 8 watt black is a versatile UV sterilizer designed for both freshwater and saltwater aquariums. With its 3/4-inch plumbing connections, this unit can effectively sterilize freshwater tanks ranging from 5 to 200 gallons, with a flow rate of 642 gallons per hour, while also serving as a clarifier for freshwater setups of up to 1500 gallons. In saltwater environments, it can sterilize tanks up to 70 gallons, with a flow rate of 214 gallons per hour. Offering a reliable and environmentally friendly alternative to chemical treatments, the Advantage 2000 UV sterilizer helps maintain a clean and healthy aquatic environment for your fish and plants.