AQUANEAT Air Stones for Ponds 2 Inch, Long Lasting Aerator Oxygen Diffuser, Air Pump Accessories for Aquariums, Fish Tanks, Hydroponics and DWC Reservoirs 4 Pack

Features

• Fine bubble: Compared with ordinary bubble stone, creating more fine bubbles, makes the dissolved oxygen amount larger
• Widely applicable: Suitable for hydroponic systems, aquarium fish tanks, preventing ponds freezing in winter, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth
• Air Stone Dimension: 2 "D; Connector Diameter: 3/16"/ or 3/8"; Recommended air pump power: > 4 W
• Quality material: Made of mineral material and sintered at a high temperature; Stable and durable, long lasting use ; Safe to your fish
• Note: You have to soak it in water for about 30 minutes before connecting to an air pump to run it; Clean it after a period time of use