I missed out on about 6 metres of really good quality fake grass here one day, a guy was just loading into a shopping trolley out of the skip as I came out. They are renovating our shopping centre at the moment so there is all sorts of cool stuff, I don't have a car though so I miss out on heaps of things.
Here are some pics, first one is the box in question, second is the beginnings of the pond and last the waterfall. The box has a crack but a background is going on that side. It also has holes in the bottom so I am going to put in a false floor and a plug in the bottom of the pond for easy cleaning. The theory is that I extend the waterfall tubing and elevate it then run water from the pond through the water fall an it will fill up and overflow back into the pond. If that doesn't work, I will just use it for something else and build my own waterfall. I have a heap of artificial plants ready to go in and a nice fake rock ornament as well just need some nice branches and vines and we're set.