features a 1/3rd H.P. oil-less air compressor. It comes with 100 feet of air hose. The dome shapeddiffuser is weighted and sits on the bottom of the pond, and has a check valve on the base of the diffuser. Stainless steel eyebolts permits rope attachment for easy installation and retrieval as well as allowing for the chimney and dome collector attachmentinstallation. The chimney attachment is suspended in an upright position above the "Air Hawg". The dome collector captures the air forcing in into the chimney, sending it to the top of your pond causing a much more concentrated draw and allows for better circulation of your pond water. The "Air Hawg" is suited for all-seasoninstallation and doesn't need to be removed. (NEW FEATURES INCLUDE) a 110 volt GFCI and a 110 Volt timer.