This solar Powered Air Pump is Eco-friendly, easy To Install and Simple To Use, & Uses The Power Of direct Sunlight to Keep Your Pond Oxygenated.the Air Pump Is Suitable For small-to-medium Sized Ponds, With A Capacity Of Up To 5000 Litres, & Is Particularly Appropriate For Ponds With No Oxygenating Plants, As It Provides Oxygenation In Hot & Sunny Conditions When It Is Needed The Most.with No Wiring, The Air Pump Is Easy To Install, Has No Operating Costs & Enjoys An Air Flow Rate Of 180 L/h. Powered By A Separate Solar Panel (supplied), There Is A 3m Cable To The Solar Panel, Along With Two Air-stones With 2m/7ft Long Tubes.