Active air, 4", air stone disc, add oxygen to your hydroponic growing system, energizes the growing solution as it aerates & circulates nutrients, will extend the life of your nutrient solution, help keep roots healthy & promote exceptional growth.

• Ideal way to add oxygen to your hydroponic growing system
• Help keep roots healthy, and promote exceptional growth
• It can aerates and circulates nutrients
• Air stones will extend the life of your nutrient solution