Running a planted aquarium? A CO2 bubble counter is a must-have tool to monitor your carbon dioxide injection. This DONGKER model is made from corrosion-resistant aluminum alloy joints and clear acrylic, so it's sturdy and lets you easily see the bubble rate. It helps ensure your aquatic plants get the right amount of CO2 for healthy growth without harming your fish. Installation is simple: connect it between your CO2 regulator/solenoid and your diffuser/reactor. Pay attention to the flow direction arrow! It comes in different configurations: single-head quick plug (about 8.4x2.0 cm), single-head screw, or double-head bubble model. The double-head version connects to 4mm inner diameter / 6mm outer diameter air tubing on both ends. It includes a check valve function to prevent water from backflowing into your regulator. Easy to disassemble for cleaning. A small but vital piece for any serious aquascaper looking to maintain a stable, thriving planted tank.
