This is my first year with ducks and I'm looking for product suggestions. I used a baby pool all summer and right now our temps are really dropping. I'm ok bringing water out for them in the morning and if they need it a second time. My concern is that this winter is going to be bad if not worse than last year. It got so cold here, my heated watering system for the chickens froze. I had to bundle up myself with full face garb to bring them all into my basement. It was ugly. So very cold and I had chickens...in my basement... The chickens did well, but I physically could not make it in and out of the house multiple times in that dangerous cold. I'd like to buy a pond heater for the duck pool. I am looking on amazon, but know nothing about wattage. They sell them staring at 250 watts up to 1500 watts. I don't want to melt the pool! Thoughts? What do you use? My other dilemma is that right now their pool is filthy. I can't even dump or clean it out. I'm hoping for a warm enough day to do so, but we may not get another one. :/ This morning I had a 1 inch thick sheet of ice that I broke with my foot. Again, everyone got fresh water, I just need another option in case it freezes while I'm at work or whatever. Drinking dirty water is better than no water, right? Not that I want them doing that, but I want them safe. Pictures are always welcome.