Pond Champs pond dye is a true blue pond dye. It has no other color added except blue. If your pond is currently clear it will give the pond a deep blue appearance. If your pond is currently muddy, brown it can give your pond a very light blue tint until the muddiness clears. Royal blue is the most popular color pond dye used on the market. Blue pond dye out sells black and blue-green dye 3 to 1. We encourage pond owners trying a pond dye to take a picture before you apply the dye and then another picture the same time of the day 24-48 hours after applying the dye. It is amazing how subtly a dye can transform your body of water. Directions: Pour directly into water from shore. Dye will mix throughout pond in 24-48 hours. 1 gallon will treat 1 acre of water 4-6 feet deep. Dye will last approximately 30 days depending on rainfall and runoff. Important Tip: All ponds will take a dye differently and the same dye can appear slightly different in the same pond from one application to the next. Preexisting conditions in a pond can also alter the way a dye appears. If you apply a pond dye and the tint is drastically different than what is discussed above, there is a preexisting condition that is altering the color of the dye. For example, customers will add our pond dye to a rather green pond and the pond turns a vibrant green color. The preexisting condition in this pond is a planktonic algae growth. When the blue pond dye was added, it intensified the color of the green planktonic algae. Once the algae is controlled or dies off on its own the beautiful blue color will magically appear.