For superior water circulation and aeration of your aquarium or hydroponic system, consider the AquaVita 4 FT Flexible Air Diffuser.
This alternative to the typical Air Stone is 4 feet of flexible tubing that is compatible with 3/16” inner diameter tubing. The Aquavita flexible air diffuser is open on both ends. This allows you to be able to run multiple air diffuser inline, or two ports connected to one diffuser on smaller aquarium air pumps. If you are just running one air line the other end can be plugged.