Iku Koi Kichi Quart Blue Pond Dye RX
Blue Pond Dye Rx Treats 32,000 gallons. Provides a natural blue tint to water. Designed for use in koi ponds and water gardens. Creates an aesthetically pleasing, "Natural blue" appearance in pond water. Will not stain birds, fish, plants, pets or other wildlife when applied at the recommended rate.