12-volt DC aeration system features low current 1/4 amp, dual bellows high volume (pumps 2 liters of air per minute), saturates water with oxygen, double discharge allows aeration of 1 or 2 livewells. Increases capacity of flow through livewells. Includes 10' of air tubing with 2 large airstones (allows pump to be mounted in any protected area), 2 anti-siphon valves protect pump against water intrusion, quiet solid-state circuits. For fresh or saltwater. One year limited warranty.