Help your finned friends breathe easily with the Penn-Plax Bubble-Wall Aquarium Air Diffuser! It‚Äôs made from durable materials to stand up to continuous use and normal wear and tear. It is designed to evenly distribute a dramatic mist of healthy bubbles along the entire length through a super-porous, non-clogging wand. Additional bubble-wall diffusers (sold separately) can be joined using the enclosed connector to create almost any length! Each diffuser can be cut with a razor blade to divide or shorten. This is a fin-tastic addition to any tank to keep your scaly sidekick happy and healthy!