Economy 2" Round Air Stones are essential components for aquariums and hydroponic systems, known for their efficiency in providing oxygenation and improving water circulation. These round air stones are constructed from durable materials and feature a fine-pore design that produces a consistent and fine stream of bubbles when connected to an air pump. They are suitable for both freshwater and saltwater applications, enhancing the oxygen levels in aquatic environments and promoting a healthy and thriving ecosystem.