Our EcoLox Black Pond & Lake Dye is a proprietary blend of dyes that create a beautiful, deep black color in your pond or lake. Using our black pond dye blocks the sunlight from reaching deep into the water while creating an aesthetically pleasing reflective surface that reflects the sky and surrounding environment. One gallon of EcoLox Black Pond & Lake Dye will treat one acre, roughly four feet deep for up to 30 days. EcoLox Black Pond & Lake Dye is a pond and lake water colorant that beautifies your water with a deep, reflective black color. Buy a single gallon for those smaller projects, stock up with a four gallon case or get our five gallon jug and save even more.