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The CO₂ Bubble Counter Model 300-62 is a compact and reliable thread-to-hose bubble counter designed for accurate CO₂ flow monitoring in planted aquarium systems.
This easy-to-install unit screws directly onto compatible CO₂ regulators and connects seamlessly to standard aquarium CO₂ tubing, allowing you to visually count bubbles and fine-tune CO₂ injection with precision.
Ideal for hobbyists who prefer a clean, straightforward setup without bulky accessories, this bubble counter combines simplicity, durability, and clear visibility — ensuring your plants receive consistent CO₂ levels for healthy growth.
Key Features:
Thread-to-hose design – connects regulator directly to tubing for simple installation
Accurate CO₂ monitoring – visually track bubble rate per second for precise dosing
Durable clear acrylic chamber for easy bubble visibility
Leak-proof metal fittings for secure, long-lasting performance
Compatible with standard 4/6 mm CO₂ tubing
Suitable for pressurised CO₂ systems
Compact and lightweight – perfect for small to medium aquarium setups
Usage Tips:
Fill halfway with water or indicator solution for clear bubble visibility.
Install vertically between the regulator and the diffuser using standard tubing.
Ensure thread is tightened securely and tubing is pushed firmly onto the hose connector.
Adjust CO₂ bubble rate slowly to achieve desired levels for your tank size.
Clean occasionally to maintain visibility and prevent buildup.
