AquaVita 4" x 2" Cylinder Air Stone (850003)Made from high-quality Carborundum and ceramic materials fired at 1350 C, the AquaVita Air Stones are great for aerating and circulating water in aquariums and hydroponic systems. They work especially well with our AquaVita Air Pumps!
This model Air Stone is compatible with 3/16" inner diameter tubing.
Case quantity is 63.
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— Ships from Livermore, California USA