Best air stone for hydroponics, aquariums or AIT works better than an air stone at half the cost!

http://modularhydro.com

This video highlights ModularHydro's exclusive Air Injection Technology (AIT) for soil, hydroponics, and aquariums! Let us show you in detail the different applications in action as well as go over the available sizes. Air injection Technology is truly revolutionary and out performs the best air stone. http://modularhydro.com