Enhances the aesthetic appeal of your pond: Night Blue Lake & Pond Dye is designed to enhance the natural beauty of your pond by adding a rich, vibrant color that complements its surroundings. Provides long-lasting color: Night Blue Lake & Pond Dye is formulated to provide long-lasting color that won't fade or wash away quickly, ensuring that your pond remains vibrant and colorful for an extended period of time. Safe for fish and wildlife: Night Blue Lake & Pond Dye is safe for fish and wildlife, ensuring that it does not harm the natural ecosystem of your pond. Suitable for a range of applications: Night Blue Lake & Pond Dye can be used in a variety of settings, including residential ponds, commercial water features, golf courses, and more. Professional Grade: One Gallon Treats 1 surface acre with an average depth of 4 to 6 foot. If no base color is present, two gallons per acre is highly recommended Night Blue uses a proprietary formula to enhance your pond or lake with beautiful navy blue color all year long.