Hmm, i might look into those just to make sure they have water just in case the pond freezes over but i would really like to find something to keep it unfroze. I have the stock tank deicers but there wore out and im afraid that they will electrocute them so before i go out and buy another i was just looking for something maybe better or even cheeper. I doubt i will find something that will, but i think it would be great if i could find something that kept the water "warm" in the midst of winter.