We had a gal on another forum ( I forget which... it's been a long time ago) that had that same sort of thing happen, but on a larger scale. The guy bleached every last one of her tanks. She had several large tanks and a few small ones, maybe 7-8 total if I remember right. Dozens of fish and every plant died.
Most of the replies to her story were of a " Well, I guess I'd have to go down for homicide if someone did that to my tanks.", but I cannot fathom how I'd feel if my spouse ( or anyone) did something like that to me.
I'm glad these people live in states that prosecute. Too many states don't give a flip about fish.
"Good judgment is the result of experience, experience is the result of bad judgment." --Mark Twain