The Penn Plax Aqua Mist Air Stone is a green colored aerator for your fish tank. It produces lots of bubbles, and a better oxygen supply for your fish, allowing them to breathe better. It can be buried under the gravel, thereby giving your aquarium a cleaner look. Airline tubing can be purchased separately.

Available in the following sizes:

• 6″ Bar Airstone
• 12″ Bar Airstone