ZRDR Aquarium Co2 System 2L with Pressure Gauge Automatic Pressure Relief Valve

ZRDR Aquarium Co2 System 2L with Pressure Gauge Automatic Pressure Relief Valve ** ATTENTION ** My liquidation items can be new or may be open box but is in excellent condition. Please review photos and ask questions if you have a concern. New upgrade bubble counter: As the water of the co2 generator system bubble counter evaporates quickly, In view of this, we have carried out a new upgrade to the bubbler. The bubble gauge is equipped with a syringe, which can be directly used to inject water (there is a one-way valve inside the generator, only into the water without leakage). And you can also add water during use, no need to close the air outlet, no need to remove the air tube, convenient for your use High Security: Automatic pressure relief valve, when the pressure of the inside co2 steel bottle exceeds 30KG will automatically release pressure. 12V Waterproof solenoid valve， Keep away from the danger of water leakage from the solenoid valve, protect your safety