Air Stones For Ponds 2 Inch Long Lasting Aerator Oxygen Diffuser Air Pump Accessories For Aquariums Fish Tanks Hydroponics And DWC Reservoirs 4 Pack

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 ; 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