I have a Farm Innovations heated base for founts, presumably only for metal ones. Since I add ACV to my water, I'd like to use the heater with my plastic fount purchased from TSC. I measured the temp of the heater base and it reads 66 degrees or so using an IR spot thermometer. That doesn't seem high enough to do any ill damage to a plastic waterer. I may place a series of bricks between the heater base and the fount to lessen the heat load. Any thoughts on this? Happy 2015 Everyone (including your flock)!