BioCube 32 Stocking List – What Saltwater Fish and Corals You Can Add?

The BioCube is an easy way to set up a reef aquarium. Adding livestock is the best part of setting up a BioCube aquarium because it allows you to make it unique. Once you have it all set up, you may be wondering what you can add to the tank.

You should avoid adding excessively large fish or aggressive fish to your BioCube aquarium. Fish that have special dietary needs or are hard to care for are also not good additions to your BioCube.

A BioCube Size 32 aquarium should have five or fewer fish. This article discusses BioCube and good saltwater fish and corals you can add to it.

Suitable fish

When choosing which fish to add to your BioCube aquarium, you must pay attention to the eventual adult size of the fish as well as its temperament. Before you add a fish to your aquarium, do your research and make sure it doesn’t require special feeding or special care and that it is not aggressive.

Pajama Cardinalfish

The Pajama Cardinalfish is boldly patterned, making it an eye-catching addition to your BioCube tank. They are also hardy, inexpensive, and peaceful, so they are great starter fish or additions to an established tank.

You can keep a Pajama Cardinalfish as a single fish in a small tank. You do not have to pair it with another.


Clownfish are an excellent choice for beginner aquarists. That is because they are hardy, meaning they can survive in less than perfect conditions. They also get along with most other fish species, making them great for community tanks.

You can get two of the same species of clownfish to add to your tank. They will likely pair up and bond. You don’t want to add more than two clownfish to your BioCube 32 size aquarium because it would be too small once you add other species of fish.

Coral Beauty Angelfish

Another great addition to a saltwater tank is the Coral Beauty Angelfish. Not every type of angelfish works well in coral tanks, so you must be careful about which kind you add. You will want to add dwarf or pygmy angels to your tank if you have coral.

Pygmy angelfishes are reef-safe, small, and non-aggressive. The Coral Beauty Angelfish makes a great addition to your saltwater tank because it is hardy, brightly colored, and inexpensive. It is recommended to only keep one angelfish in a tank.


Basslets such as the Royal Gramma Basslet bring bright colors to your tank. It is important to only add one Basslet to your tank, as they tend to be aggressive with their own kind. However, they get along fine with other species of fish of the same size and temperament.

Try to avoid adding similarly colored or similarly sized fish to your tank, like the Diadem Dottyback or the Royal Dottyback.

Suitable invertebrates

Remember not to add an invertebrate clean-up crew until there is something to clean up. You don’t want them to starve. Once you notice algae or detritus accumulation, you can add the invertebrates. Shrimp, snails, sea stars, sea cucumber, and small lobsters are suitable for the BioCube 32 size aquarium.

Suitable coral

Coral are more sensitive than fish, so you should only add coral to an already established tank. Different coral require different lighting, flow, and food, so it is more difficult to choose coral to add. Soft corals are better for beginners.

Also, the BioCube aquarium comes with standard stock lighting, which limits which types of coral you can keep. The following coral can be added to a BioCube aquarium and thrive even with the stock LED canopy lighting it comes with.

If you want to keep more demanding corals, you can upgrade the lighting on your aquarium.

Pulsing xenia

Pulsing xenia coral, also known as Pom pom coral, do great under low lighting conditions, making them a great choice for your BioCube aquarium. They are also easy to care for and grow fast. Xenia corals spread throughout aquariums, so you may have to frag and move them to a bigger tank.

Green star polyps

Green star polyps also grow fast and are great for beginners. This type of coral grows on rocks, sand beds, or the back wall of a tank. Their color shows brightly under the lights.

Kenya tree

Kenya trees do great under BioCube lighting and grow fast. They are easy to keep and will provide plenty of movement in your BioCube aquarium.


Acans do well under low to medium lighting. They are also hardy coral, making them perfect for beginners. They can survive in less than ideal water conditions. Acans also grow quickly and spread over aquariums, so make sure you leave them enough space.

Duncan coral

Duncan coral is another coral that does well in low to moderate lighting. They are a great choice for the BioCube aquarium because they are brightly colored and won’t bother other coral in your tank.

In Summary

The BioCube 32 size aquarium is a perfect way for beginners to get started with saltwater aquariums. You can buy this kit from any pet store to get started. It comes with lighting (different colored LEDs) that can be set on a timer. It also comes with a filtration chamber and a quiet submersible pump, dual intakes, and a return nozzle.

When setting up your BioCube aquarium, it must be placed close to an electrical outlet and out of direct sunlight. The BioCube Size 32 weighs over 300 pounds when full, so you must place it on a surface that can support its weight.

Next, you must set up the pump and filter cartridge. After that, you can start filling your tank with sand and rock. Then add the saltwater and plug in the pump.

After you have cycled the aquarium, which involves establishing a natural bio-filter with living bacteria, you can start adding fish. Once your tank is established, you can add coral.

Some great saltwater fish to add include Pajama Cardinalfish, Clownfish, Coral Beauty Angelfish, and Royal Gramma Basslet. Some coral to add include Pulsing Xenia, Green Star Polyps, Kenya Tree, Acans, and Duncan Coral.