Food storage tank to water butt conversion...

Find someone with long arms !

I had to virtually climb inside our one to fit the tap, but make sure someone else is holding the outside bit 

Other than that, Piece of cake. And place it on some breeze blocks so you can get your watering can under the tap.

Rob

This guy is a bit boring but he has all the facts on tap sizes, etc and how to install things.

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Not sure what you mean by spending a fortune  on this...the parts are the basic ones needed to make a water butt useable and not blow apart under pressure from the water, which can be almost explosive as one fellow found out. The tools used in the video are tools that most people have or can borrow from a neighbour. The long-handled whatsit is a necessity if you have a fixed lid, as the one in the video was. Most barrels have removable lids and you can simply lean inside to affix the connector at the bottom. The excess runoff line at the top needs to be a reasonable size and firmly fixed in as a heavy rain can easily blow it off otherwise. One inch of rain can easily fill 10-15 average butts in one go, and that's a lot of pressure in a short period of time so parts need to be in tight.

If you feel it can be made cheaper still here's another one for you, but I guarantee nothing 

www.youtube.com/watch?v=KTwuicxxPA0&feature=related 

Thanks very much for all your replies. Wouldn't you know it, after all the fuss and excitement getting a blue barrel we went down to the site at the weekend and a lovely lorry driver had dropped off about 25 barrels as he thought they would be useful!

If you're out there, thanks Mr Lorry Driver man!