Okay, this is an odd one. I have a 50 gallon rubbermaid tank with a floating de-icer. Trough is set on the fence line, fencing is electric. Trough doesn’t make contact with the electric fencing. Heater is only a couple weeks old. Two of the three horses drink out of the trough with zero issues.
However, I watched my other horse stand at the trough for about half an hour today debating if he wanted a drink or not. Would get close with his nose, then pull away, would paw in front of the trough, would stick his nose in, pull it out, etc. I finally brought him out a bucket, and he gulped down the entire thing.
This horse is sensitive in general…he flips out if he gets a static shock when I pull his blanket and he spooks hard if the electric fence is ticking anywhere. So, my initial thought was that he maybe gets scared of the noise the heater makes? Or could there be the slightest bit of stray voltage that he’s sensitive to but it’s not affecting the others?
Another thing to note, all of my horses have a heated and a regular bucket in their stalls, and this horse has never once drank out of his heated bucket either.
I ended up pulling out the heater and turned off the fence today just in case…could voltage from the fence be affecting the water?