AHANDMAKER CO2 Bubble Counter with Built-in Check Valve, Single Head

• Built-in Check Valve Structure: This bubble counter comes with a check valve inside the body. The structure can limit water from flowing back toward the gas pipeline, maintaining stable gas circulation inside the whole pipeline system. The fitting structure connects smoothly with most aquarium gas pipelines
• Size Information: The bubble counter measures about 80mm (3.15in) in length and 20mm (0.79in) in diameter, with a 2.5mm (0.10in) hole. The compact overall size occupies limited space during installation and can be arranged neatly alongside other aquarium gas accessories
• Aluminum Alloy and Acrylic Materials: The connector sections are made of silver aluminum alloy, and the observation tube adopts transparent acrylic material. The transparent tube allows users to clearly observe bubble movement inside. The material structure stays stable in common aquarium environments
• Simple Connection: Installation can be completed without additional professional tools. The end of the bubble counter fit most standard aquarium air tubing. Users can directly connect the tubing to the ports to finish assembly, and the connection position stays firm after proper tubing installation
• Wide Applications: This single-head CO2 bubble counter matches most aquarium CO2 supply systems. It helps users observe and adjust gas flow conditions for aquatic plant environments. It can be combined with matched CO2 regulators and diffusers to form a complete gas supply assembly for planted aquariums

Product description Introduce: Packing list: Aquarium CO2 Bubble Counter with Built-in Check Valve Size: about length 80mm, diameter 20mm, hole: 2.5mm. Color: clear Material: Aluminium Alloy, Acrylic Features: Install this bubble counter between your CO₂ regulator and aquarium diffuser to accurately track CO₂ flow levels for your aquatic plant tanks. The built-in check valve stops tank water from flowing back into your CO₂ supply system, protecting your equipment whether you use a DIY CO₂ kit or standard supply setup. Note: Please note that the product is manufactured in metric system with certain tolerance. Directions No