Sand wedge (shown above)
This pond consists of two black metal containers that fit one inside the other, so there’s room for a water garden and a small dryscape. Test the containers first to ensure they’re watertight. (These two looked OK, but the corners leaked so I put in a liner.) Although the large container is 48 centimetres square and the smaller one is 28 centimetres square, they’re only 14 centimetres high, giving the arrangement a low profile. After placing one inside the other, I filled the inner container with water and added the plants.