The Aqua One 850 Ocellaris Canister Filter is an efficient filtration system designed for medium-sized aquariums, offering a flow rate of 850 liters per hour. It features an integrated UVC sterilizer that helps eliminate harmful microorganisms, bacteria, and algae, ensuring crystal-clear water and a healthier aquatic environment. With its advanced mechanical, biological, and chemical filtration, this filter is perfect for maintaining water clarity and promoting the overall health of your aquarium. Ideal for tanks requiring reliable and compact filtration.