Penn-Plax Bubble-Wall Air Diffuser for Aquariums SPECTACULAR WALL OF BUBBLES: the diffuser creates a dramatic mist of healthy, aerating bubbles. SUPER POUROUS WAND: connect the wand to your air pump (not included) for an even distribution of bubbles. CONNECTOR INCLUDED: to allow you to create any length of bubble wall by connecting this wall to other Penn Plax bubble walls (sold separately). LENGTH OF THE WAND: this bubble wand is 18 inches long SHOP PENN PLAX FOR ALL YOUR PETS NEEDS: Penn Plax is a manufacturer and distributer of top pet supplies, who specialize in creating excellent pet products for animals both great and small. The air diffuser can be cut to shorten, or joined together to give a unique custom design Bubble wall fits across a 10 gallon tank The bubble wall air diffuser makes a great addition to any aquarium and will add great movement to your tank