Penn-Plax Aqua-Mist Add-A-Stone Air Stone Green, Blue 2 in x 5.5 in Small

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