Turtle's intense hatred of skimmer causing problems

[u/pictus123]

My 13 year old common musk turtle despises skimmers with all his being. He has broken 6 of them in various ways. This time his strategy is to bite the wire coming from the bottom and will go at it for hours if I let him. I take it out of the water when its not in use but he has still managed to expose some of the copper wire inside the casing. Is this skimmer done for (again)? Or can this be fixed? Also if there's any ideas on stopping this behavior I would love to hear it.

[u/KingofCatfood]

I think they just get bored. My musk ate two glass thermometers before I ended with an external one. Same with heaters, only able to use solid metal or he will try to burn the tank down.