Features: A great way to add oxygen and lower CO2 levels to your hydroponic, circulation system, fish tank and aquarium. Round surface and flat bottom make the stone place steadily. Low oxygen consumption and high rate. Made of premium quality non-toxic mineral material. High dissolved oxygen rate and create even and tiny bubbles rather than a limited number of large ones. Specifications: Suitable connector: 4mm/8mm hose Model: ASB-100. Jetting volume: 20 L / min Recommended air pump power: > 4 W. Please soak the air stone in water for > 3 hours before use. Size: 8cm/10cm/12cm/15cm Material:Other-- Air Stone Bubble Hemisphere Airstones Diffuser for Aquarium Fish Tank Hydroponics Air Pump 10cm
