Durvet AquaVet Blue Pond Dye features SUSPEND™ Technology to enhance pond or lake depth with a vibrant blue color. Simply pour or throw in from shore; it stays in suspension longer for lasting depth and color protection. One liquid gallon treats 1 acre 4–6 feet deep, while one throw pack treats ¼ acre 4–6 feet deep. Ideal for shallow, muddy, or cloudy water, it naturally improves the appearance and visual depth of your pond or lake.