The Tetra StartZyme tablets dissolve quickly and make caring for your aquarium faster, easier and a lot more convenient. They are designed to remove chlorine, chloramines, ammonia and heavy metals, and stimulate the protective slime coat of your tropical fish, Goldfish and marine fish. They help to heal fish wounds and contain a safe blend of bacteria and enzymes to help establish the biological cycle and break down organic sludge to ensure the utmost cleanliness and health for your pet.