What You Need to Know

A lot of people assume pond lighting works the same way as pool lighting—just install one light and you’re done. But ponds behave very differently. With only a single light, you usually end up with one bright beam cutting across the water while the rest of the pond stays in shadow. The koi look dramatic for a moment, but as they swim, they cast long shadows behind them and disappear into the dark. Add a few lights from different angles, though, and the entire pond comes alive. The fish glow, the water sparkles, and the whole space transforms.

The Transformation

Underwater lighting completely changes how you experience your pond at night. Without sunlight reflecting off the surface, the koi become even more visible than during the day. Many pond owners say the nighttime view becomes their favorite part of owning a pond—and the only regret we ever hear is, “I wish I had installed more lights when we built it.”

The goal isn’t just to light the pond—it’s to light the koi. That’s why we recommend installing multiple lights, depending on the size and shape of the pond. Position the fixtures so the top of each niche sits about 12-18 inches below the waterline, and place them on the wall where you’ll be viewing the pond most often. This setup gives you even illumination and beautifully highlights the fish as they move.

Pro Tip

A 8' x 10' rectangular pond looks fantastic with two large 500‑watt pool lights installed on the main viewing wall, spaced about four feet apart. The result is a warm, inviting glow that showcases your koi long after the sun goes down.

Used thoughtfully, underwater lighting turns a pond into a nighttime centerpiece—one you’ll enjoy far more than you might expect.