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  • Bubble counter, reflux valve and ceramic diffuser in one.
  • Customised ceramic disc, ensuring the efficient creation of micro bubbles.
  • Increases the CO2 utilisation as opposed to a regular air stone.


Tropica’s CO2 diffuser contains a bubble counter, reflux valve and diffuser in just one unit. The bubble counter enables easy and accurate CO2 dosage, since it is easy to count the big bubbles inside the chamber during adjustment. A reflux valve prevents the aquarium water from being sucked backwards, which is possible when the bottle gets empty, or in case you use a magnet valve to turn off the CO2 supply during the night.

Tropica 3-in-1 CO2 Diffuser

  • Unscew and take out the ceramic dic carfully. Fill the bubble counter chamber with aquarium water and screw the ceramic disc back. attach the C02 line and attach to the side of the tank towards the bottom. In order to ensure perfect adherence to the glass, make sure that the glass is clean and grease-free.