Microbe-Lift Bio Black Pond Colorant is designed to safely color lakes, ponds, fountains and lagoons while helping to block out specific light rays. Contains enzymes that digest organic waste and helps control odors as well. Once diluted, does not stain birds, fish and most concrete surfaces. Safe for humans, plants and aquatic life. Do not overuse or it may burn your plants. Use 1 oz. per 500 gallons of water.
16 oz colors up to 8,000 gallons