Aquatic Blue Lake And Pond Dye Is An Organic Water Dye For Use In Ponds, Lakes, Decorative Water Features, Golf Course Water Hazards, And Impounded Bodies Of Water With Limited Or No Outflow. Aquatic Blue Improves The Appearance Of Surface Water By Turning Waters A Bright Blue Or Blue-Green Color. Aquatic Blue May Be Poured Directly Into The Water At Several Locations To Enhance Dispersion. Treated Water Will Not Harm Fish, Waterfowl, Pets, Or Wildlife. Water May Be Used For Irrigation Or Fishing Immediately. Apply Aquatic Blue At A Rate Of 0.25 Gallon Per Acre Foot Of Water.