Black Onyx Pond Dye 1 gal treats up to 2-4 acres!

Black Onyx Dye is a high concentrate colorant that helps create the unique natural look of black water lakes and ponds favored in golf course and resort locations. The look of ornamental water features, water gardens, and other contained bodies of water will also be enhanced by the use of Black Onyx Liquid Lake and Pond Colorant. 1 gallon treats up to 2-4 acres, 4 feet deep!