XL Aquarium Air Stone Durable Bubble Disk For Fish Tank

Feature: \n 1. 100% brand new and high quality.\n2. Increase oxygen levels, lower CO2 and raise pH.\n3. It is an important instrument to successfully keep aquatic fish for respiration process.\n4. Durable, washable and sintered by high temperature, different from other air stones. Easy and convenient to use.\n5. Creates bubbles in fish tank while attached to an air pump. Creates water currents and dazzling underwater scenes. \n\nSpecification: \nDescription:\n\n100% brand new and high quality.\n\nIncrease oxygen levels, lower CO2 and raise pH.\n\nIt is an important instrument to successfully keep aquatic fish for respiration process.\n\nDurable, washable and sintered by high temperature, different from other air stones.\n\nCreates bubbles in fish tank while attached to an air pump.\n\nCreates water currents and dazzling underwater scenes.\n\nEasy and convenient to use.\n\nSpecifications:\n\nMaterial: Mineral stone + Plastic\n\nColor: Gray\n\nSuitable for inner diameter 4mm soft tube.: