EcoLox Blue Pond & Lake Dye is an Acid Blue 9 based pond and lake dye. EcoLox dyes are eco-friendly. EcoLox is completely nontoxic and safe for all fish, waterfowl, wildlife, livestock, pets and humans. It is safe for swimming and irrigation. EcoLox dyes create a beautiful aqua blue color when added to lakes and ponds of any size.
One gallon of EcoLox will treat one acre four feet deep for up to 30 days.