Simple Deluxe Large Air Stone Cylinder for Fish & Plant in Aquarium and Hydroponics Air Pump, 10 Pack

Replace the stone after it stops working properly. Environmental Material & Oxygen Supplement> Air stones are a great tool to add oxygen and circulate added nutrition to your hydroponic growing system. These air stones produce fine bubbles, which contains oxygen and will extend the life of your aquatic pets. Simply attach an airline tube to the air stone and place it in the desired location. No extra tools or assembly are required. Easy to Use Cylindrical Shape> The high-quality, harmless air stone has a cylindrical shape. It is the most effective shape for producing bubbles. >

• Size: 4" X 2" X 2". Fits for 4mm inner diameter tube.
• Quality and safe materials: Made of safe and washable material -Silicon carbide, non-toxic materials are safe for your fish. (Soak the stone completely in water about 1 hour before use.)
• Widely applicable: Suitable for hydroponic systems, ponds, aquarium fish tanks, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth.
• Features: High-temperature sintering, the air stones for aquariums are sturdy, durable and washable. The dissolved oxygen rate is high, producing uniform and tiny bubbles. Increase oxygen and reduce carbon dioxide levels.
• Tip: Air stones need to be replaced every few months because they are blocked by dust, bacteria and algae. Clean regularly by a brush.