GORDON'S PondMaster Watercolors Lake Pond Dye Ready-to-Use Shimmer Blue, 1 Gallon, 3211072 Gordon's, gallon, concentrate, pond master 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 asper acre foot of water, easy to understand dilution instructions for the most common pond sizes. Features Imparts an inviting Shimmer Blue color to lakes and ponds Treats one acre of water four feet deep Use at 32 fluid ounces per acre foot of water Easy-to-understand dilution instructions for the most common pond sizes USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.