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:
- 4" Bar Airstone
- 6" Bar Airstone
- 12" Bar Airstone