UP Co2 Bubble Counter Mini D-518

UP Aqua D-518 Bubble Counter Mini Compact and easy to use.
This counter can accurately measure your C02 flow rate.
Ideal for aquarium CO2 system.
Great for planted aquarium.
The inlet has a built-in check valve to prevent water flow backward.
Material: ABS Size: 6.5 x 3.5 x 2cm