Gordon's, Gallon, Concentrate, Pondmaster Watercolors Shimmer Blue, Contains Blue Colorant, Imparts An Inviting Shimmer Blue Color To Lakes & Ponds, May Be Immediately Used For Fishing, Swimming, Irrigation & Watering Livestock, Won't Harm People, Horses, Livestock, Fish Or Other Aquatic Species, Treats 1 Acre Of Water 4' Deep, Use At 32 OZ Per Acre Foot Of Water, Easy To Understand Dilution Instructions For The Most Common Pond Sizes.