Check the listing for details. EasyPro Concentrated Pond & Lake Dye Water Soluble Packets. Condition: New. Listed at 39.99 USD. EasyPro Lake Dry Packets are a safe, convenient part of overall maintenance for a pond or lake. These nontoxic dyes improve the appearance of pond water, help with overall water quality, and reduce the amount of light below the water surface. Reducing the light below the water surface can lessen the growth of algae and weeds and can provide protection for fish from herons and predators.Each packet treats up to 1/3 acre (assuming 3'-4' depth)Mixes quickly in combination with aeration devicesWater can be used for swimming or irrigation once dye is dispersedCompatible with most aquatic algaecides and herbicidesSKUItemColor Description PD4PBlue Lake Dye, WSP 4pk"True blue" or "Caribbean blue" PD4PBKBlack Lake Dye, WSP 4pkDark, reflective tint PD4PSBSerenity Blue Lake Dye, WSP 4pkDeep blue Application Instructions Ideal for large ponds and lakes, apply as needed. These water soluble packets are easy to use, simply toss them directly into the pond. Use of disposable gloves is recommended, since concentrated packets can stain hands or clothing. Once dispersed, the dye will not stain rocks, plants, pets, wildlife, or people. Keep out of reach of children. Safe for fish and aquatic life.