Oh Sunil, I know what you mean by the vertical interface. I was fishing in a small boat on the ocean once with 10 foot swells. From the boat the swells looked like a vertical wall of water. I could see the fish in the swells and some times they were above my head with my fishing line going out horizontally and sometimes even sloping upward. I could watch the fish hit the lure just like looking into an aquarium. It was weird!
The original reasons I built my pond were:
1. A source of black dirt and fill for my yard.
2. Improve the view in my back yard.
3. Lower my homeowners insurance (ready source of water for fire department.
Then somehow I got the idea to put fish in the pond, and life changed.
