Marine Metal 110 Air Bubbles Aerators are complete, ready-to-use air pump systems. These powerful and inexpensive aerators will allow anglers to keep fresh or saltwater bait indefinitely. Marine Metal 110 Air Bubbles Aerators run on standard 110 volt household current. 110 volt No batteries required Produces 99.5% saturation of dissolved oxygen Rubber base mount for quiet operation Weighted glass bead air stone Silicone airline tubing Designed for freshwater and saltwater use Tank tested to ensure quality Model Tank Size (gal.) Pump Volume (STL/min) Aerator Outlets A-1 5 - 15 1.3 1 A-2 20 - 50 5.0 2