Cray, I've looked at them before, but is that Rubbermaid tank insulated? The one I have is just a galvanized trough. Heck the bottom may be rotted out on it for all I know. I haven't looked at it in 5 years or longer. I bought it about 10 years ago when we were in a 3 year drought. I put it out just to give deer a place to drink.