Aquascape Blue Pond Dye safely tints pond water an impressive blue color, helping to provide shade, filtering sunlight and cooling water. Our Blue Pond Dye contains special enzymes that help to balance the pond ecosystem, significantly reducing maintenance throughout the year. One dosage will last up to six weeks. The easy-to-use pump top accurately measures 100 gallons of treatment per pump and the full bottle treats 5,000 gallons of water.