CREATE A HEALTHY OXYGEN RICH POND - Pond Oxygenator pumps are able to run numerous air stones at any one time, creating a healthy oxygen rich pond that will benefit your fish and biological filter bacteria WEATHER-PROOF DESIGN - the pump has been designed to be weather-proof, so that it is able to be installed in most locations around the garden, or in a shed or garage close to your chosen power supply COST EFFECTIVE - your Pond Oxygenator pump is both cost effective to run, as it is a low wattage design, and can be maintained with excellent value maintenance parts REDUCES CARBON DIOXIDE LEVELS - the use of an air pump will dramatically increase the level of oxygen in the pond and reduce carbon dioxide levels, thus aiding in preventing the pond from stagnating by injecting air into the water FOR LARGE PONDS - maximum flow rate 1800 Litres per hour; maximum pumping depth 2.2 m; 5 m cable supplied; no plug; air line and air stones sold separately (not included)