How Stuff Works

Fish can't live with Magic Rocks because the metal salts from the crystals get into the water and poison them.
One surprisingly common question I get is whether it’s okay to put fish in a Magic Rocks aquarium. The short answer is no, definitely not! For those who don’t know, Magic Rocks are a science project in which you take a packet of special rocks, pour a “magic” solution over […]

Magic Rocks and Fish in an Aquarium