Oxygen is vital to all pond inhabitants whether these inhabitants are your livestock or the bacteria responsible for the breakdown of waste products. The primary functions of the air pump are to "fluidise" the Kaldness media, and to maintain an aerobic environment for the bacteria.
The Airtech 120 Air Pump has been tested and proven to provide the highest air delivery on the market at any given depth, and to be economical and totally reliable. The Airtech 120 Air Pump is weather resistant (manufactured from aluminium) and comes with a thermal protection device fitted as standard.
After the water temperature in your pond drops to 60 degrees or below, you should decrease the amount of food given to your fish and feed them no more than once a day. Ask your dealer about a food designed for cool weather feeding.