Pond lights add striking dimensions to your garden pond at night and during misty or gray conditions. Pond lighting can be inserted into the pond, around the pond's perimeter, behind a waterfall, submersed in a fountain, or placed above the water and be complemented by a fogger. Lighting your pond at night will extend the time you're your garden pond can be enjoyed. Underwater lighting illuminates the water in the pond when special underwater lights are inserted within the walls or on the bottom of the pond. Underwater pond lighting can also be illuminated in different colors. Choose colors that flatter your aquatic plants and your fish. Pond lighting can cost anywhere from $80 to $280 - spotlights cost about $100 each, while underwater lights start at about $200.