Post History

Galvanized metals are dipped in a hot zinc bath. The resulting zinc coating prevents rusting.

https://university.upstartfarmers.com/blog/be-careful-about-zinc-in-aquaponics

points out that zinc leaches into surrounding water and can poison fish.

https://www.sciencedirect.com/science/article/abs/pii/S0166445X06000361?via=ihub

says that the mechanism of toxicity is disrupting calcium metabolism.

So, the article you point to is quite likely correct: keeping clams in galvanized containers will poison them.