Planted Tank Guru
Join Date: Sep 2006
Location: Northern California
I believe that the thread is pretty old. The parts would added up to almost the cost of a new ADA system.
If you check in the Swap n Shop, there was someone selling a nano CO2 system they bought from Taiwan. There isn't a standard valve, but he somehow made a DIY connector to refill the nano tank from a standard 5#, 10#...etc tank.
Those are two options you can pursue.