Penn-Plax Aqua-Mist Add-A-Stone Air Stone Green/Blue 2in X 5.5in SM

Penn Plax Aqua Mist Airstone adds a healthy stream of bubbles to your aquarium This long lasting sand stone aquarium aerator will add beauty to your fresh or saltwater aquarium Adds a healthy stream of bubbles to your aquarium Multiple stones can be connected together Sandstone airstones can be used in fresh or saltwater aquariums