High pressure air pump great for small Koi ponds or quarantine tanks. The airflow is adjustable for more or less air depending on your Koi pond or water garden needs. Use to oxygenate water and improve gas exchange. The Luft Pump delivers 7.0 p.s.i. against water pressure, making it an excellent choice for ponds. Its heavy rubber diaphragm cannot be damaged by back pressure; this means if an air stone has not been maintained, the diaphragm won't be damaged. The adjustable rheostat increases air flow by regulating electricity, not by blocking air flow, allowing more efficient, economical performance.

Comes with 1 1/2" X 3" air stone and 25 feet of 3/16 airline tubing.