Fluval CO2 Bubble Counter


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The CO2 Plastic Bubble Counter provides accurate monitoring of CO2 dosing for aquariums up to 50 gallons (190 L).

Fluval Works with Models
Fluval CO2 Counter Fluval 95 Gram CO2 Kit
Fluval CO2 Counter Fluval 45 Gram CO2 Kit 


  • Open the bubble counter, fill it with water and close it.
  • Loosen the hose lock connectors on the top of the cap of the bubble counter.
  • Attach the hoses from the CO2 diffuser and the CO2 regulator valve to each of the lock connectors and hand tighten the hose lock connectors to secure. NOTE: the arrow pointing down indicates CO2 input and the arrow pointing up indicates CO2 output.

Dimensions: 1.25 x 1.25 x 3.25