CO2 Bubble Counter Portable ABS Plastic CO2 Diffuser with Suction Cup for Aquarium Fish Aquarium Planted

Made of high‑quality ABS material. It is strong, and has a service life. With a powerful suction cup, it can be adsorbed on the cylinder wall or hung on the side of the cylinder. The device is located in a position where the CO2 cylinder can be easily observed, and can be used as a reference for adjusting the amount of CO2. Item Type: CO2 Bubble Counter Material: ABS Plastic Size: Approx. 7x4cm Celsius 2.8x1.6in  Suction Cup Diameter: Approx. 2.5cm Celsius 0.98in