I've had neons and LED's light in water with Tesla towers, but nothing has exploded and melted

That really was an incredible video.
Does the electrode burn out of water as normal ?
In some ways, it reminds me of using the Earth to conduct, as Tesla did, but here you have water conducting very efficiently and with all that great power. Maybe it could be a new technique for cooking a lobster in restaurants
I would imagine you could extend the burning to the size of a bathtub though..with nobody sitting in it !
Makes me think of Stan Meyer and his car, with what is going on here.