UP AQUA Mini CO2 Bubble Counter
High Quality Mini CO2 Bubble Counter Diffuser Plant Aquarium Tank +Rubber sucker
Enables accurate monitoring of CO2 dosing.
Small and easy to use.
Suction cup for vertical surface attaching (can be removed if desired).
It includes the bubble counter and a sucker.
Size; 6.5 x 3.5 x 2cm.