[JustOneMore20]

That all in one looks better than the Drs Foster&Smith one. Not sure what type of tubing it is, but it looks like it would work. If the regulator will fit on that 50lb tank, then it would work. You'd have to figure out how to move that tank around though when you need to fill it....especially if its a steel tank and not aluminum. My 20lb tank is super heavy when filled and its aluminum....and I'm a girl, but my dad still has trouble carrying it.

I would still get a powerhead to diffuse the co2 into the tank. That water pump or whatever you get with that kit doesn't look that effective.