The MicroSkim skims the surface of your pond and removes unwanted debris, including protein film, before it has an opportunity to sink and further contaminate the water (thereby reducing unnecessary maintenance). It features a large removable net to trap larger leaves and debris, and integrated filter brushes which provide additional mechanical filtration. The rounded housing design provides strength, and an ultra-durable lid protects the internal filter components. This surface skimmer offers professional-grade features and quality, making it great for the DIY market... no wonder it's so popular! The MicroSkim is ideal for ponds up to 1000 gallons. Features Include: durable Lid - provides protection of filter components, debris Net - Traps larger leaves and debris, filter Brushes - provides additional mechanical filtration, and Skimmer Door - Skims the surface of the pond.