Our wooden bubble stone diffuser is suitable for saltwater aquariums, aiding in the of protein skimmers. It generates a high volume of fine bubbles, which are crucial for the efficient removal of organic waste. The wooden construction ensures it remains a reliable component of your aquarium maintenance routine. Features -Color:Khaki -Material:Wood -Size:6.50X2.30X2.20cm/2.55X0.90X0.86in -Caliber: 4mm -High performance filtration: achieve clear and clean water with efficient filtration, essential for maintaining a healthy aquarium -Even bubble distribution: the air stone diffuser ensures even release of oxygen bubbles, quality and oxygen levels -Promotes aquatic health: provides sufficient oxygen to support the healthy growth and vitality of fish and other aquatic plants and animals - and easy to replace: made from robust materials, these accessories are designed for easy replacement and maintenance -Suitable for all aquariums: suitable for use in both freshwater and saltwater tanks, providing versatility and convenience for various setups Package list: 2 Air Stones