Marine Metal Products® 2 - way Bubbles Aeration System works on battery power or 12V car power.
A portable Aeration Pump for the lake, the car, and at home! It'll aerate 7 1/ 2 gallons for up to 52 hours on 2 "D" batteries, or use the included adapter to plug it into your car's cigarette lighter.
For fresh or saltwater use. Powerful, pumps 1.39 liters of air per minute. Includes 12V-to-3V adapter, weighted air stone, and 30" of tubing. Water-resistant case and switch.