Aquarium CO2 Druckminderer Regler Rückschlagventil Bubble Counter Magnetventil!
(Dual Gauge Aquarium CO2 Regulator with Solenoid Valve Bubble Counter W21.8 EU Plug. 1 x Co2 regulator. Suitable for: aquarium. 2) Adjust decompression pressure gauge to provide stable and accurate CO2 output.