Penn-Plax Bubble Wall Air Diffuser 18″
– Creates a dramatic mist of healthful bubbles in your aquarium
– Size – 18 in.
– Evenly distributes fine bubbles through a super-porous, non-clogging wand
– The tough polycyl material stands up to continual use
– The Air diffuser can be cut to shorten, or joined together to give a unique custom design.