WYIN / ZRDR Professional Two Stage CO2 Regulator including the Solenoid and Bubble counter for aquarium planted tank systems.

Easy assembling: Tools required for attaching to the CO2 cylinder povided with the Kit
Extremely precise needle valve assures accuracy and reliability in dosing the CO2.
Strict quality control assures the best quality.
Safety valve prevents any accidents if overpressure occurs.
Two gauges: one shows the internal pressure (amount of CO2), the other shows the released pressure to the aquarium.
With Solenoid With Bubble Counter

Feature: 
It is a high quality product. 
Double table show pressure, precision design. 
Easily to adjust, stable and accurate CO2 output. 
Endure high-pressure design, without air leak. 
With electromagnetic table, stable, durable, quiet and no noise.