Laguna 4000 Clear Flo Kit Provides the ultimate combination of pump power and water filtration efficiency;Unique strainer cage protects the impeller and maintains constant water flow Clear-Flo Kits are available in 4 sizes to meet your specific water gardening needs Max-Flo Solids Handling Waterfall & Filter Pump features energy-efficient pumps, the energy savings often pay for the cost of the pump Pressure-Flo Pressurized Pond Filter System features a Cleaning indicator that takes the guess work out of maintenance intervals Laguna Clear-Flo Kits are covered by a 3-year warranty