Hello. We have six 10-week old chickens and have been having trouble with the galvanized steel waterers -- they spill over too easily, so we're having to fill ours several times a day. We want to buy a new waterer a.s.a.p., but we also have to think about the harsh sub-zero Wisconsin winters ahead of us, so as long as we're buying a new waterer, we want to deal with the water-heating issue at the same time. I keep reading about trouble with the self-heated waterers -- being difficult to fill up -- and it looks like the only other real option is a heated base with a galvanized steel waterer atop. Then we run into the spillover issue. I don't think we just have a faulty steel waterer. It's our second one, and our friends who keep a larger flock say their steel waterers do the same thing. Any advice? Thanks.