Photo 1 of ZRDR 2L Co2 Generator System with Pressure Gauge Automatic Pressure Relief Valve Bubble Counter for Aquarium Plants?Stable Output

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Photo 1 of ZRDR 2L Co2 Generator System with Pressure Gauge Automatic Pressure Relief Valve Bubble Counter for Aquarium Plants?Stable OutputPhoto 2 of ZRDR 2L Co2 Generator System with Pressure Gauge Automatic Pressure Relief Valve Bubble Counter for Aquarium Plants?Stable Output