HSL Aquarium Brass Bubble Counter for Co2 Solenoid Regulator Gold
The water can be prevented from flowing back into solenoid and the cylinder.
This lets solenoid not be damaged by flowing back water and the cylinder's life span be longer.
Specification: The product along with fine turning system can control the rate of CO2 flowing.
It can count the flow amount of CO2 accurately to sustain the good growing of the water grass.It is easy to use with good appearance and compact size.
