16 in. Waterfall Spillway with Filtration creates stunning waterfalls and disappearing water features, adorning your landscape with an eye-catching cascade of sparkling water. Its sensory impact is unparalleledits dramatic beauty etched in memory. The Waterfall Spillway with Filtration comes with an extended spillway for easy installation and is constructed of UV high impact plastic. The Waterfall Spillway can be decorated with stone so it remains discreet within the landscape. It mounts to any liner with ease, and its 16 inch spillway allows for a generous cascade. Filter foam keeps spillway clear of debris, enabling its dramatic presentation. This model contains filtration with bio-media to help promote the growth of beneficial bacteria, contributing to a balanced ecosystem. Waterfalls also enhance aeration, boosting ecosystem health. Illuminating your waterfall (lights sold separately) adds elegance and enhances the sensory experience, imparting a sense of serenity to its admirers.