The Planted Tank Forum - View Single Post - Which should I get? Only found the following CO2 Regulators

**kevmo911** · 02-12-2013, 01:31 AM

No, that's a single stage. A dual stage will always have some sort of "bump" behind the gauges. Look at the pics for the other 3 listings if you type in what you have in caps, specifically the pics of the back end of the regs.

Here's a current Concoa series listing with .pdf's:
http://www.concoa.com/specgas_catalog.html

Not sure exactly what the first one (the one you specifically were referring to) is, but the other 3, which are pics of the same reg, are 412's (duals).

02-12-2013, 01:31 AM	#25
kevmo911 Planted Tank Guru (View User Tanks) PTrader: (32/100%) Join Date: Sep 2010 Location: Greensboro, NC Posts: 3,750	No, that's a single stage. A dual stage will always have some sort of "bump" behind the gauges. Look at the pics for the other 3 listings if you type in what you have in caps, specifically the pics of the back end of the regs. Here's a current Concoa series listing with .pdf's: http://www.concoa.com/specgas_catalog.html Not sure exactly what the first one (the one you specifically were referring to) is, but the other 3, which are pics of the same reg, are 412's (duals).