EHEIM CO2-pressure reducer with manometers f. reusable bottle

EHEIM pressure reducer with manometer for 500g and 2000g refillable CO2 bottles Accurate pressure reducer designed for reusable systems Ideal for the complete EHEIM CO2 SET 400 and EHEIM CO2 SET 600 fertilization systems Two pressure gauges to indicate both working (system) pressure and cylinder pressure EHEIM bubble counter for exact and ongoing CO2 dosing 360° rotating hose connector No tools required for assembly Replacement seal is included 2-year warranty