Posted: 16/09/2013 at 12:55
It doesn't have to be rectangular, round ones work very well. You don't need much depth of water. You do need a dark background for the water, smooth black is best. No treees which can drop leaves into the water, as nothing makes a reflecting pond look more like a forgotten item, than rotting leaves causing water to be murky. Many people use a little bleach in the water to keep it clear, but as it is likely to be used as a drinking place by all sorts of creatures I`d not go this route. There is More to keeping a really good reflecting pond beautiful than you might imagine, but they are stunning when well done and positioned. If you want to grow plants that reflect rather than just sky, then you run into the game of keeping the leaves and flowers out of the pool too. You also don't want it to be a breeding ground for mosquitoes and so forth - hmm, maybe a wildlife pool is easier!!
Do give it a go, there may well be books in your local library with good advice in them - quite a good place to start maybe?