4 in1 external CO2 diffuser check valve bubble counter aquarium water plant tank [Small replacement 20mm refiner] Small to replace 20 mm refiner

4 in1 external CO2 diffuser check valve bubble counter aquarium water plant tank

Specifications:
Model: 871406
Fit for water hose: 12mm / 16mm

Features:
- CO2 diffuser/Check valve/Bubble Counter/Water in and out 4 in 1.
- External design, don't occupy space of tank.
- The ceramic can be replaced.

Package included:
1 X CO2 diffuser

Note: The pictures are for reference, please make the object as the standard. Thank you for your understanding!





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