An ideal way to add oxygen and lower CO2 levels to your circulation system, fish tank and aquarium. Round surface and flat bottom make the stone place steady. Low oxygen consumption & high fusion rate. MODEL: ASR-100. Jetting Volume: 15 L/min, Recommended Air Pump Power: >4 W. Fits for 3/16 inch or 3/8 inch inner diameter tubing. Measures 4" in Diameter by 1.5" Height. Please soak the air stones in water for >3 hours before usage.
