Marina Flexible LED Air Curtain provides an excellent way of adding visual pizzaz to aquascapes as well as improving water circulation and oxygenation.Ží The air curtain is easy to install - simply submerge and attach it to the bottom of the aquarium and connect an air pump to it. The flexible curtain can be shaped to suit your design needs, you can install it in a straight line to create a breathtaking wall of bubbles and lights or shape it in semi-circle fashion around ornaments, plants or rocks for dazzling visual highlighting. This unit includes x8 L.E.D's, a low voltage transformer and 3 suction cups. Requires an air pump.