DEEP BLUE COLOR – Brings vibrant color back to dull, murky water! 4X Blue Pond Dye helps keep your lake or pond beautiful year-round. It produces an attractive natural blue color & makes shallow water look deeper. 4X CONCENTRATED – A little goes a long way here! One gallon container is four times (4X) more concentrated than 4 gallons of competing products. Gives even more value with a single 1-gallon bottle treating up to four acres, coloring the water 4-6 ft deep. LIQUID POND SHADE – Our blue dye for ponds acts as a barrier to lessen aquatic plant growth. It provides a protective barrier that reduces sunlight penetration and helps keep bodies of water cooler. MIX-FREE APPLICATION - Pond water dye and lake colorant that evenly distributes across the water with no mixing required. Simply pour in several spots along the edge of your pond and watch your water quickly change color! COMPLETELY NON-TOXIC – This lake and pond dye is completely safe for water used for recreation like swimming and fishing. Animal-safe dye is perfect for small koi ponds or larger areas containing livestock, horses, birds, pets, and other wildlife. 4x More Concentrated than the competition!