Hello! I'm new to ducks and am wondering what to do about their water needs in winter. I have 5 ducks (3 mallards, a Blue Swede and a Harlequin) and wonder if I can use one of those horse trough de-icers to keep my duck pool from freezing. Currently I have baby pools but am considering buying a proper horse trough or a better quality "pond" from Home Depot or similar. I live in Alaska so things will be freezing here quickly -- any suggestions? Many thanks for any input you more experienced duck-owners might have!