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A 14-litre (3-gallon) nano reef containing small and large polyped stony corals, as well as various soft corals. A nano reef is a type of marine aquarium that is typically less than 140 litres (30 Imperial gallons / 37 US gallons). The exact limit that distinguishes a nano reef from a regular reef is somewhat ill-defined.
The most common type of saltwater fish tank, the tropical marine tank, houses marine animals from tropical climates. Usually kept between 24 and 28 °C (75 and 82 °F), these tanks include tropical reef tanks, as well as fish-only tanks. These tanks tend to have a low concentration of microscopic plankton and other foods eaten by filter feeders.
The fresh appearance of samples and the lack of sedimentation indicates that Adams Seamount is a recently active seamount. [3] Potassium-argon dating of rocks dredged from Adams Seamount has yielded Holocene ages, including one age of 3,000 ± 1,000 years before present. [13]
Artificial reefs can help increase biodiversity in an area. Artificial reef structures (ARs) have a variety of intended uses, ranging from the protection, enhancement and restoration of marine ecosystems [6] to the support of human activities like fishing, recreational diving and surfing. [23]
For example, the death of the only fish in an 11-litre (3 US gal; 2 imp gal) tank causes dramatic changes in the system, while the death of that same fish in a 400-litre (110 US gal; 88 imp gal) tank with many other fish in it represents only a minor change. For this reason, hobbyists often favor larger tanks, as they require less attention.
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Reef HQ (typeset as ReefHQ) is the world's largest living coral reef aquarium. [3] It is located in Townsville, Queensland , Australia. The aquarium was built as a Bicentennial Commemorative project and is a part of the Great Barrier Reef Marine Park Authority (GBRMPA).
This is as of 2021 Australia’s largest reef restoration project, and the largest outside of the United States. [31] Stage 1 of the project was completed in June 2017, with work on Stage 2, involving the addition of 11,000 square metres (120,000 sq ft) reef over 16 hectares (40 acres), completed in September 2018.