That's very helpful, thanks Neil

So far I've got a secondhand regulator coming my way via ebay (£13 inc p+p) and am looking for all the other components - needle valve, solenoid, and a CO2 tank.

Even with the postage costing as much the valve Aquaristic is my cheapest option so far!

Seeing how cheap they are, I may just sell my secondhand regulator back on ebay and buy a complete set from them! It's probably still a little more expensive than buying the individual parts, but only a little and I would get a guaranteed system and no faffing about getting different bits to work together.

choice, choices, fantastic .