Round Polo Ceramic Airstone

Keep your nutrient solution fully oxygenated with a round air stone. These round air stones are great for the bottom of small, medium and large reservoirs.

• Round air stone will fit into almost any reservoir.
• Fits our 4mm Airline.
• Porous stone creates many small bubbles.
• Mixes and oxygenates your nutrient solution.
• Partly plastic coated to help prevent being damaged.
• Oxygenated nutrient solution improves root-health and turbo-charges plant growth.
• Comes in three sizes – 3,4 and 5 inch.