Vivosun Air Stone 2Pcs 4 X 2 Inch Large Air Stone For Aquarium, Fish Tank And Hydroponics Air Pump

Oxygen is very important for hydroponic growing system, air stones is a great tool to add oxygen and circulate nutrition to your hydroponic growing system. They can produce fine bubbles for oxygen replacement, extend the life of your nutrient solution, keep roots healthy. Air Stones are ideal for hydroponic systems, ponds, aquariums or fish tanks and other systems.