I hope you would still run tests to determine how much left over Nickel is getting into the ocean.

Not just coral will be effected by Nickel, but other important invertebrates as well such as amphipods which play an enormous role in the food chain and health of reef environments.

And we’re talking parts per billion (ppb) when heavy metals can start to become toxic.

And correct me if I’m wrong, but Manganese is another element often found in olivine, which is another metal that can be toxic to marine life.