PA 8″ Round Grey Air Stone With Surround keeps your nutrient solution fully oxygenated. This circular version is great for the bottom of small reservoirs.

• Air stone will fit into almost any reservoir
• Porous stone creates many small bubbles
• Mixes and oxygenates your nutrient solution
• Oxygenated nutrient solution improves root-health and turbo-charges plant growth
• Air pump and air line available separately