EasyPro Pond Products PD16B Concentrated Black Pond Dye for Water Gardens and Koi Ponds - Helps Filter Out UV Rays from The Sun - Safe for Use Around Fish, Plants, and Pets -16 fl oz.

This black colorant is designed for use in water gardens and koi ponds. It will not stain birds, fish, plants, pets wildlife, or people once diluted and when applied at the recommended rate. Handle with care prior to dilution to prevent black staining. Eastport black pond day provides a dark, reflective appearance to pond water and helps hide fish from predators.