System for aerating garden ponds to prevent them freezing comprises hollow bamboo canes connected at top by wire loop, from which metal tube or rod hangs which acts as weight to sink canes

摘要

The system for aerating garden ponds to prevent them freezing comprises hollow bamboo canes (1) which are connected at the top by a wire loop (4). A metal tube or rod (2) hangs from the wire and acts as a weight to sink the canes.