The Hakko HK-25L is a vacuum style air pump suitable for koi ponds up to 2500 gallons. 17 watts used.
It is a small unit with a surprisingly high output. Ideal for water depths between 2 feet to 8 feet deep. Shut off depth is 11 feet deep. The Hakko air pumps are built to last with a very durable body and mechanics meaning years and years of everlasting quality airflow.
Very low noise 32/38 dB at 1 meter, low power consumption, Silent operation, Completely oil free, Overload protection with Auto off/on switch for overheat situations. Low power consumption. UL and CE listed for outdoor use.
The outlet fitting is approx 5/8" O.D. 6 foot power cord supplied.