When you have a tank or aquarium with live fish in it, you want to complete the look and appeal by adding coral to the tank. Coral packs are one way to quickly fill the empty space in your aquarium and make the tank more beautiful and physically alluring. There are many types of beginner coral, such as pulsing xenia, Zoas, and other soft corals to give your tank a unique and wondrous appeal without much care needed.

Coral structures provide a home to the fish and help keep them calm with places to hide at night. Coral helps to create balance in a fish tank, so it's wise to buy saltwater coral if you have a plethora of fish, crabs, and other sea life. Certain species of crabs, shrimp, and even fish have symbiotic relationships with corals and can benefit greatly from having them in the aquarium.