Carol - many thanks for your idea on the bog garden. Problem I have now small, mature pond is full to overflowing with frogs. Everything seems to prefer the smaller, mature pond, which is quite sheltered. We are 960ft above seal level, very exposed and the larger pond is, unfortunately, also very exposed. This will also be larger pond's first full year. The water lily did really well for its first year but plants in baskets, around the ledges, had to be moved when the wild, windy weather started. Would really appreciate any advice on ledge planting as baskets had to be set on different levels of bricks but didn't quite seem to blend into a natural setting. Scared to plant directly onto pond liner. Any help would be extremely appreciated. Never mind, the cement crocodile (very tasteful) on pond path hasn't fallen in/moved yet so maybe I need to weigh everything down?