One of the most quiet, durable pumps on the market today.  They have very low energy consumption, an oil-free operation, and are self-cooling. 

Available in 2 Sizes:

     -45 Watt Kit is for ponds up to an acre, and includes 12' of weighted air line and one airstone

     -100 Watt Kit is for ponds over an acre and includes a 4 Airstone Manifold and 12' of weighted airline