Lagoon Reef Tanks

Lagoon Reef Tanks

One of the things that makes reef keeping so interesting is the wide variety of tank styles available.  From cubes to breeders to traditional rectangular tanks, there is a tank to suit every space and vision.  One type of tank that has become increasingly popular in the last few years is the Lagoon tank.  So what is this tank style and why has it become so popular?

The reef casa studio 12 is the perfect nano lagoon aquarium 

While there is no fixed definition of what makes a tank a Lagoon type, one common description of a Lagoon tank is “one where its height is the smallest dimension by a significant amount.”  Put more bluntly, it is a shallow tank.  Often they will also have a greater distance front to back than traditionally shaped tanks.


Lagoon tanks have a number of interesting features, which have contributed to their popularity.  First, they offer a canvas to create truly unique aquascapes.  Many reefers utilize the shallow depth to add mangroves to their tank and even design aquacapes that include rockwork above the waterline.  This allows hobbyists to keep unique invertebrates, such as soldier crabs, that require access to both dry land and water.  Lagoon tanks are also great for creating macro algae or gorgonian dominated tanks, such as the “Caribbean Lagoon” style tank.  Of course, Lagoon tanks can also be set up in a  traditional reef tank style as well.

In addition to offering a platform to create unique aquascapes, many hobbyists also find Lagoon style tanks easier to work in than tanks with more traditional dimensions.  Because they are shallow, it is much easier to place corals near the bottom without requiring a stool or getting your entire arm wet.  An increased surface area to volume ratio also aids in gas exchange, which is especially important in macro algae dominated tanks.


While they are a relative newcomer to the reefing hobby, Lagoon tanks have carved themselves a unique niche for reefers looking to create a one of a kind lagoon aquascape, or who just want the benefits of a shallower tank for their traditional reef. If you have any questions about what type of tank is best suited to your needs please reach out to us.  Happy Reefing!