Aquascape 99771 MicroSkim Skimmer for Pond Water Feature Waterfall Landscape and Garden (Discontinued by Manufacturer) Designed with the DIY backyard pond builder in mind, the MicroSkim is ideal for ponds up to 200 square feet Round shape maximizes structural design Includes: durable lid, a debris net, skimmer doors and filter brushes that provide additional mechanical filtration. 6 inch Weir opening for proper filtration