2 Inch Air Stone For Pond, Aquarium Air Stone, Long Lasting Aerator…

Fine bubbles: Compared with ordinary air stones, it produces finer bubbles and increases the amount of dissolved oxygen. Wide range of applications: suitable for hydroponic systems, aquariums, preventing ponds from freezing in winter, helping extend the life of nutrient solutions, keeping fish/roots healthy and promoting plant growth Air stone size: 2 Connector diameter: 3/16/or 3/8 Recommended air pump power: 4WHigh-quality material: Made of mineral material, sintered at high temperature; stable and durable, long-term use; safe for your fish Note: It must be soaked in water for about 30 minutes before connecting to the air pump for operation; clean it after use for a period of time Packaging list: 4* oxygen bubble stone