8oz. Treats 4,000 gallons
·· Specially formulated to safely color reflecting ponds black
·· Will not stain birds, fish, pond rocks, or most concrete fountains once diluted
·· Enzymes assist beneficial bacteria in your pond to create a healthy environment
·· Mixes completely in hours
·· Safe for humans, plants, and aquatic life
Add one ounce per 500 gallons.