Kasco large pond deicers uses powerful thrust to keep your dock safe. De-icers push warm bottom water to the surface creating an ice-free area of protection around your boat, dock, pier, or other waterfront property. They help protect fish and aquatic species by allowing for open areas where oxygen can enter the water. Kasco dock bubbler deicers can be hung from a vessel, dock or other flotation device and positioned to move warmer water from a deeper channel to the shallower area where your boat is moored. This helps to protect your boat and dock from lifting damage due to “ice jacking” and the shearing and crushing damage caused by ice expansion.