Originally Posted by mnprairieman
That seems to be my thought; the plans I found on the Internet used a metal tank painted black. My thought is that the plastic tanks would have a better insulating factor once the water is warmed.
Yeah, I don't think painting them is a good idea. It could chip off over time and it might make the water have a funny taste. And that could make the horses drink less - then you couldhave a case of impaction colic...