Active Aqua Air Stone Round, 8" Size:4 Inch Using stator blades and dual

Using stator blades and dual hydrodynamic wind circles

it has a 2-point automatic calibration that makes it easy to calibrate

Double density

It is super concentrated and sprays as a very fine mist so the can lasts for hundreds of applications

Active Aqua Air Stone Round, 8" Size:4 Inch Using stator blades and dualActive Aqua air stones are an ideal way to add oxygen to your hydroponic growing system. The micropore design energizes the growing solution as it aerates and circulates nutrients. Air stones will extend the life of your nutrient solution, help keep roots healthy, and promote exceptional growth. Comes with easy mount suction cups. Standard pressure 0. 01 MPa, Max pressure 0. 012 MPa Choose from two versatile, round air stone disc sizes: 4 inch: 4"