Aquarium Co2 Bubble Counter Valve Regulator Diffuser Pump Accessories. Transform Your Aquarium with Our Expertly Designed CO2 Bubble Counter, Crafted to Enhance Your Underwater Environment. Made from Premium Aluminum Alloy and Acrylic, This Durable and Reliable Bubble Counter Features a Non-return Function to Prevent Backflow, Ensuring Your CO2 System and Aquatic Plants Remain Damage-free. Easily Monitor CO2 Levels to Supply Your Plants with the Optimal Amount of Carbon Dioxide. Available in Both Single-head and Dual-head Options to Suit Your Specific Aquarium Needs. Features: - Durable Construction: High-quality Aluminum Alloy and Acrylic Materials Ensure Longevity. - Non-Return Function: Prevents Backflow During Pressure Changes, Protecting Your System. - Clear CO2 Monitoring: Allows for Precise Control and Delivery of Carbon Dioxide to Plants. - Choice of Designs: Available in Single or Dual-head Configurations for Flexibility. - Easy Installation: Simple Setup with Detailed Instructions for Hassle-free Use. - Condition: 100% Brand New - Material: Aluminum Alloy & Acrylic - Single Head Size: Approx. 8 X 2 Cm (3.1 X 0.8 Inches) - Double Head Size: Approx. 8.2 X 2 Cm (3.2 X 0.8 Inches) - Package Weight: 32-34g Installation: - *Single Head:* Insert Seal Ring on Trachea Interface, Add 4/5 Water to Counter, Tighten Cover, Attach CO2 Pipe, Secure with Nut. - *Double Head:* Similar Process with Dual Connection Points for Enhanced Functionality. Enhance Your Aquatic Setup Today and Maintain Optimal Growth for Your Plants .