I have two tanks - one has amano shrimp, siamese algae eaters, a dwarf pleco and a few dozen small snails; the other has two goldfish, hornwort, and algae. Before I saw the snails, I moved some hornwort into the shrimp tank so the shrimp would clean off the algae. They did, but now there are snails on the hornwort. The goldfish eat the hornwort very enthusiastically, so they’re running out, while the snail hornwort is growing and filling the tank. I don’t really want to kill the snails, but I read that eating them can kill the goldfish because their shells will block the goldfish’s digestive tract. I want to move the hornwort back. Will eating snails really hurt the goldfish?