Here in the great white North, I don't think that Aqua Miser would work out very well. Before I plugged in the heated water dish, I could watch the fresh water freeze in the time it took me to put out feed, collect eggs and open their doors. I'm talk'n minutes. But I have to say, seeing a chicken drink from a hamster waterer spout is pretty funny.
I put a red light in my coop when the temps hit -0- and the chickens stayed up and partied all night. It was like a chicken rave. Naughty girls. I had to go out, tell them the party's over and turn it off. I'm using a ceramic heating bulb now and am fairly happy with it. Mild heat, no light. I wish it warmed up more, but it's better than nothing.