Robinzrb

Basically a CO2 System have: CO2 Tank Regulator Gauge needle valve Safety Valve Check Valve CO2 Air Tube Bubble Counter Diffuser It will be much better if you also have: solenoid valve CO2 Monitor

Check my new listing on trade me, search Aquarium CO2 Supply System, generate pure CO2 based on one off acid-alkali reaction theory, in NZ it will be the cheapest and very stable way to supply the CO2. I'm using the system now and it's quite good.