J to the rescue.
Here are my thoughts: elements do go bad. Hoping this is all that happened. BUT if you keep tripping breakers, chances are it is because there is moisture from the tank getting to the elements and causing the breaker to trip.
The bottom element had a hole in it, so water was for sure getting inside that one. Hard telling how long it'd been that way and I'm guessing we just over worked the top one as it was trying to do the job of two. Fingers crossed that this job is done for a couple more years.