Question about Co2 pressurized system.

[msouth468]

So, all you need is a tank, regulator and a diffuser for the aquarium? Or is there more involved?

 

[djlen]

A 'bare-bones' but reliable system:
Tank; double gage regulator; reliable/stable needle valve; CO2 proof tubing; diffuser.
There are other bells and whistles that some people use, but I've never used more than the above and never had a problem.

Len

 

[msouth468]

What does the Co2 proof tubing do? Does that just show it is working?