High quality "ICE-FREE" set with durable polystyrene float.In winter, the gases generated cannot escape when the ice cover is closed. This leads to poisoning and thus to danger to the pond occupants. The oxygen content in the garden pond is stabilized and gas exchange is enabled by the use of the ICE ACTIVE SET from FIAP. The perfect product to keep a position of your garden pond free of ice. By this complete solution you do not need any accessories. The set includes a styrofoam floating body, an air pump, a 20 meter air hose, 2 non-return valves and 2 AIR ACTIVE ventilation balls 50 mm. With the ICE ACTIVE SET from FIAP "ice-free" through the winter.This text is machine translated.