Hozelock Solar Air Pump. Add a little bit of oxygen to your pond with the Solar Air Pump. Powered by the sun, this air pump is a economical unit using only the power provided by the sun. Providing additional aeration in your pond benefits the fish by giving them the vital oxygen that may decline in the hot weather. The Solar panel absorbs the suns power and transfers it through the airline tubing to the 2 air stones.A ground spike is provide so you can place the panel in the best position for the direct sunlight. The Solar Air Pump is easy to set up and install. Simply place the airline in to the back of the panel, position the panel in the optimum place and place the airstones into the pond. Specifications:Solar Panel (LxW): 22cm x 19cm Included: Solar panel, ground spike, 2x 2 metre airline tubing and 2 airstones Solar Panel (LxW): 22cm x 19cmIncluded: Solar panel, ground spike, 2x 2 metre airline tubing and 2 airstonesModel: Hozelock Pond Solar Air PumpModel Number: 3537Max Flow: 160 LPHPower: 0.9wOutlet Size: 4mmComes with a 1 year manufacturers guarantee.