Pond Dye limits sunlight penetration at the bottom of the pond Creates vibrant blue color in pond water Concentrated Quart treats like Gallon Dye- 1 Quart Treats 1 acre Safe for use in fish pond - 100 percent safe for fish, wildlife, and humans Can be used for livestock or swimming same day as pond dye application Vivid Pond Dye is a true blue pond dye. Vivid Blue creates a vibrant blue, caribbean looking pond. Natural Waterscapes Pond and Lake Dye comes in a concentrated quart. This treats a 1 acre pond, up to 6 feet deep- double dosing for 12' depth. Repeat application monthly for best results. For ponds with heavy flow or during periods of heavy rain, treatment frequency may need to be increased. Pond Dye limits sunlight penetration to the bottom of the pond where weeds and algae grow. Combining Pond Dye, with Muck Remover, Pond Cleanse, Bacteria Booster, and Bottom Aeration provides a natural and proactive approach to pond management. This approach targets the root cause of many pond problems. Pond Dye should be applied all months of the year when the pond is not frozen. Why? Algae has no temperature restrictions. Even if the water temperature is 40 degrees, it is still possible for algae to grow. For southern states that have no freeze over period, treat all year long. For northern ponds, begin dye treatments as soon as ice begins to melt, and continue applying until the pond freezes again. Our pond dye is a concentrate, however, no mixing is necessary. Simply pour dye at multiple points around the pond. Dye will distribute through the pond within 24 hours.