How deep does water need to be to reduce algae growth in a pond?

To effectively reduce algae growth in a pond, water depth typically needs to be at least 3 to 6 feet. This depth limits sunlight penetration, which is crucial for photosynthesis in algae. Additionally, deeper water can help stabilize temperatures and improve water circulation, further inhibiting algae proliferation. However, the effectiveness can also depend on other factors like nutrient levels and water quality.