Thats a new form to produce HHO, I've haven't see it. Look good idea.
If you stop video when cable makes contact with "water", you will see immediate production, which means a saturate water of KOH or sea water. And obviously that use more than 30 amps. I make a similar test with my HHO generator.
But, I am going test with magnet. Stevie, how you think it is connected?
Thanks for share the video.