The XL Atomic CO2 bubble counter is an effective tool for accurate measurement of the bubble count at a glance. Measure the amount of CO2 entering the aquarium.
Extra Large precision CO2 Bubble Counter with integrated check valve.
Use to count CO2 bubbles entering aquarium.
Mount inline within the CO2 tubing line.
Includes mounting bracket with suction cups to mount inline outside aquarium.
This thing is great! So much easier to fill, and I like how easy it is to see the bubbles. My only suggestion would be to make the holder a little smaller profile so it would be easier to see the bubbles when it's mounted in the bracket.