Create a dramatic, natural-looking waterfall while adding filtration and aeration to your pond with this 16-Inch Rock Lid Waterfall Spillway. Designed for ponds, waterfall streams and landscape water features, the wide 16-inch spillway creates a smooth, cascading sheet of water that becomes an eye-catching focal point. MAXIMIZED FILTRATION: This 16-inch-wide waterfall features BioBalls, a biological filter pad, and a built-in rock and plant shelf. These components provide both biological and mechanical filtration, helping support cleaner pond water while the cascading waterfall helps aerate the pond. The rock-style lid and front lip help conceal the spillway structure and create a natural appearance that blends into surrounding rocks, plants and landscape design. The built-in shelf provides additional space for decorative rocks and aquatic plants to customize your waterfall. This spillway-only configuration includes the 16-inch waterfall spillway, rock lid and front lip. Pump, tubing and other equipment are not included, making this a great option for DIY pond builders, landscapers and contractors who already have their own compatible equipment. Built for dependable long-term use, the spillway is backed by a 5-year warranty, giving you added confidence when building or upgrading your pond waterfall. Perfect for backyard ponds, koi ponds, garden ponds, waterfall streams and decorative landscape water features, this spillway combines filtration, aeration and a beautiful cascading waterfall in one attractive design.