Buy the bits you need like a diffuser, co2 tube, bubble counter, one way valves, regulator (everything you see in a co2 pack you'd buy from a shop with out the co2 bottle)
Then hook it up to a fire extinguisher
There are quite a few topics on the forums about it, if you search you'll see it's easy and cheap(er)!
If you look in the planted chit chat section at PARC then you'll find a couple of pinned topics on how to do fire extinguisher CO[sub]2[/sub]. Also, you can search the forums for fe co2 and see what you can find
Good find , much cheaper than buying the box sets from fish shops!
Looks like the regulator will fit onto a FE once that bottle is empty. If it's cheaper for you to get a FE rather than refill that bottle? FE is 2kg roughly £20?
Yep will fit FE it was on Aquarist Classifieds for about 20 mins before I spotted it rang to reserve and collected the day after, advertised at £60 got it for £50. Theres a full 2kg FE at my parents house that I'll be erm, borrowing haha