That looks all-business, mate!
Would you mind going into some detail on how the equipment works, for a newb like me?
I would love to invest in a setup like this.
I'll have a go, having re-setup my tank and CO2 last night...
So, on the left you've got the CO2 cylinder, with a CO2 regulator (2 gauges at the top) which reduces the pressure from the cylinder from something like 200bar down to a useable 1 - 10 bar of pressure.
The thin black tubing, which is CO2 resistant (CO2 can't escape from it) takes the CO2 to the plastic bubble counter (clear thing with water in it on the cylinder). The bubble counter lets you get an idea for how much CO2 you're injecting. Co2 bubbles from a tube under the water line, slowly. Its purely so you can actually see the bubbles and count them to measure. Most seem to have a rate of about 30 bubbles per minute but this is purely down to personal setup.
After that the CO2 tubing goes off to a diffuser mounted inside the tank, which is a bit like a bubble stone, only it produces a much finer mist of bubbles of CO2. The smaller the bubbles the better, because we want the CO2 to be absorbed into the water, and not float to the surface.
Next to that is obviously the external filter which has got an inline (external) heater on the return pipe (the black thing with blue ends). This just means theres no heater in the actual tank, so gets some of the clutter out of the tank which is what you want when creating fantastic aquascapes, as George does!
Hope thats not too over described, and makes sense
Edit: Just to give you some idea of cost. The External heater would cost about £35 - £45, the CO2 cylinder would probably be about £40 or more (though you can do this cheaper using CO2 fire extinguisher, like I do - £25), the regulator would cost about £50 and then theres all the little bits like CO2 tubing, diffuser, bubble counter etc. Not to mention plant ferts, plant substrates, upgraded lights, plants even...
Its a big investment but if you're trying to create something like this its worth it I think