Welcome to Ponds and Waterfalls L.A. Ten years ago I built my first pond and waterfall in our own backyard with the help of my two brothers visiting from Germany. The tiny kois I bought at the time are now nearly two feet long. Through the years, I gained a lot of experience caring for them, the water lilies and all the aquatic plants. I also became very familiar with the various equipments that are part of a pond, such as underwater lighting and auto water supply valve. If you will have fish in your pond, you may want to install electric fencing to ward off raccoons. We can install all that for you.