Aquacide Pellets with 2,4-D are a selective, root killing, systemic herbicide. Controls submersed, emersed, and floating weeds in recreational lakes and ponds. Use around docks, boat hoists, swimming beaches and shorelines. There is a wide margin of safety with respect to fish.
Marble-size AQUACIDE Pellets sink directly to the bottom, visibly expand over a period of several hours to a day, and stratify a layer of herbicide at the bottom. Herbicide is released slowly in controlled amounts. As weeds grow herbicide is absorbed through leaves, stems, and roots. Herbicide absorption is quite rapid, occurring in just a few hours under good growing conditions. Once absorbed the herbicide is translocated throughout the weed to the growing parts of leaves
and roots. Growth at these parts is halted. With growth halted the weed dies. Kills the entire weed roots and all. Initial effects occur in 7 to 10 days, indicated by brittle stems and curling leaf tips. Full kill will occur in 3 to 5 weeks. Once dead, weeds sink to the bottom and decompose.
AQUACIDE Pellets are effective any time susceptible weeds are actively growing. When applied in spring and early summer, less material is required, less dead weeds occur, and a longer weed free period will result. Successful applications can be made to actively growing weeds in late summer and fall. The full effect of late season applications may not be fully evident until the following season. Applications to well established perennial weeds, such as Cattails or Water Lilies, may require a second application in 3 to 5 weeks if weeds show signs of recovery. Heavy clay, mud, or silt build up may reduce root absorption by effectively sealing the roots. Early season application or more than one application may overcome this problem. Water movement in the form of currents or bottom springs may wash herbicide from the treatment site and reduce effectiveness.
The most comprehensive up to date peer review of all data pertaining to 2,4-D was published by the Journal of American College of Toxicology in 1992. "As far as the scientific evidence is concerned 2,4-D ...in aquatic situations under label directions. ...is effective, it decomposes easily, it does not accumulate in living tissue...."
As a rule of thumb AQUACIDE Pellets will be effective on weeds that exhibit a laced or branched vein structure. See What Controls What. AQUACIDE Pellets will usually not be effective on weeds with parallel veins. AQUACIDE Pellets are easy to apply. Nothing to mix or spray. Simply broadcast pellets uniformly over the water surface with a fanning motion of the hand. Similar to sowing grass seed. Effective at any depth. Apply at the rate of 2.5 lbs. per 1,000 sq. ft. of lake bottom. For well established perennials, such as Cattails and Water Lilies, or late in the season, use 4.0 lbs. per 1,000 sq. ft. Avoid churning the water in the treatment site for 72 hours following application. This will help insure maximum herbicide is available for absorption by the weeds. Water treated with AQUACIDE Pellets should not be used for drinking or irrigation for 21 days. See Water Use Restrictions (Days).