The K-Koi 9000 GRP Filter (Pump Fed – Media) NO LID is a top-of-the-line fiberglass filter system that consists of four bays. Each bay is designed with advanced multi-chamber technology to provide superior filtration and reduce the need for maintenance. With a 1.5″ inlet and 2″ outlet, this filter includes a multi-spray bar, filter brushes, and Japanese matting for complete filtration performance. Suitable for ponds up to 9000 liters, it ensures exceptional water quality and clarity for your aquatic environment.