Elevate your aquarium's filtration system with the Yee Adjustable Stream Wall-mounted Fish Tank Filter Box. This innovative external hang-on filter is designed to provide superior water quality and clarity for your aquatic habitat. Its adjustable flow stream ensures customizable filtration, while the oil removal capability effectively eliminates surface oil slicks, maintaining a pristine aquatic environment for your fish and plants. Easy to install and operate, this filter box is a must-have addition for any aquarium enthusiast seeking efficient and effective filtration.