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2. 32 types of saltwater fish for your aquarium - AOL

   www.aol.com/32-types-saltwater-fish-aquarium...

   Mesmerizing, kaleidoscopic, and fabulously exotic, the huge variety of types of saltwater fish to pick for your aquarium will give you a visual taste of the underwater ocean world.

3. Ecosphere (aquarium) - Wikipedia

   en.wikipedia.org/wiki/Ecosphere_(aquarium)

   The advantage of an aquarium closed with a lid (rather than a permanently sealed plug, which is found in the base of an EcoSphere) is that if the system goes out of equilibrium, the owner can remedy conditions and prevent a complete die-off. Intervention to maintain good water quality allows a larger number of shrimp to live in the open system ...

4. List of largest aquariums - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_aquariums

   Large aquariums exhibit a wide variety of species and animals in a large range of tanks. These are typically public aquariums and may also include oceanariums and dolphinariums, designed to showcase a diverse range of marine animals for the public. In operation Only aquariums with a total capacity of more than 10 million litres and/or a tank larger than 5 million litres are included in the ...

5. Deep sand bed - Wikipedia

   en.wikipedia.org/wiki/Deep_sand_bed

   A deep sand bed is [1] a filtration method used in some saltwater aquariums and some freshwater aquariums. A deep sand bed, similar to the Berlin Method , is designed to cultivate anaerobic bacteria in the bottom layers of sand , converting nitrate to nitrogen gas to remove toxic nitrates.

6. Aquarium - Wikipedia

   en.wikipedia.org/wiki/Aquarium

   An aquarium may have freshwater (salinity below 500 parts per million), simulating a lake or river environment; brackish water (a salt level of 500 to 30,000 PPM), simulating environments lying between fresh and salt, such as estuaries; and salt water or seawater (a salt level of 30,000 to 40,000 PPM), simulating an ocean environment. Rarely ...

7. Live rock - Wikipedia

   en.wikipedia.org/wiki/Live_rock

   Live rock becomes the main biological nitrification base or biological filter of a saltwater aquarium. Harmful elements dissolved in the water of the aquarium, including ammonia, phosphates, and nitrates, are processed with the help of the organisms that are introduced from the live rock into the aquarium's ecosystem.