METAL AERATOR

Extremely quiet aeration systems. Operates. on 2 D-cell (not included)up to 52 hours, 12. VDC adapter (included), and has a 110 V. adapter port (adapter available at Radio. Shack). Powerful 3VDC motor pumps up to. 1.39 liters of air per minute . Aerates 5 - 10. gallons. Water resistant case with neoprene. seals and a booted waterproof switch. Fresh. or salt water. Individually tank tested. Space. saver clam shell package.