Water Agitators such as De-Icers, Muck & Weed Control Devices from a variety of providers. Electric De-Icers provide an economical and efficient way to prevent ice from forming around your boat, dock, and boat lift. De-Icers are designed to draw warm subsurface water and directing the warm water to the surface. The continuous current produced by a De-Icer can help protect you from ice damage through the cold winter months. Aqua and Hyrdosweeps provide an easy way to move unwanted algae, silt, muck and vegetation from around your dock and swimming area.