Why not to use io salt

[MKLKT]

I'm just honestly very curious as to what could do such rapid damage, that's more than just one parameter slightly over/under. That's some serious scorched reef.

The only thing I've had personally that caused a chain reaction like that was my GSP spawning which killed my snails (but not urchins, anemones or crabs.) which led to massive water quality issues. Took me a couple months to bring everything back. But it's not similar because it didn't really **** off the corals.

[Aquattro]

If I had to bet some cash on guessing what one thing could do that, I'd guess copper.
Is it possible to tamper with a bucket and add copper somehow?