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2. Algae scrubber - Wikipedia

   en.wikipedia.org/wiki/Algae_scrubber

   Periodic removal of the algae that has grown inside of an algae scrubber removes nutrients (ammonia, nitrate, phosphate) from the aquarium water, thus providing the needed filtration. An algae scrubber is a water filtering device which uses light to grow algae; in this process, undesirable chemicals are removed from the water. [1]

3. Ammonia poisoning - Wikipedia

   en.wikipedia.org/wiki/Ammonia_poisoning

   A build-up of ammonia in the fish tank leads to ammonia poisoning. Species of ammonia-oxidizing bacteria (AOB) can break down the ammonia and convert it to other, less toxic, nitrogen products. Two examples of AOB are Nitrosospira and Nitrosomonas. [2] The amount of ammonia present is usually accompanied by a rise in pH. As ammonia is a base ...

4. Aquarium filter - Wikipedia

   en.wikipedia.org/wiki/Aquarium_filter

   Aquariums are usually much more densely stocked with fish than the natural environment. This increases the amount of ammonia produced in the relatively small volume of the aquarium. The bacteria responsible for breaking down the ammonia by converting it to nitrite, Nitrosomonas , colonize the surface of any objects inside the aquarium.

5. Find out which of these must-see aquariums in the US are ...

   www.aol.com/must-see-aquariums-us-close...

   Containing a massive 6.3 million gallons of water, this humungous aquarium is home to whale sharks (the largest fish species in the ocean), the American alligator, manta rays, blue-spotted ...

6. Recirculating aquaculture system - Wikipedia

   en.wikipedia.org/wiki/Recirculating_aquaculture...

   All RAS relies on biofiltration to convert ammonia (NH 4 + and NH 3) excreted by the fish into nitrate. [4] Ammonia is a waste product of fish metabolism and high concentrations (>.02 mg/L) are toxic to most finfish. [5] Nitrifying bacteria are chemoautotrophs that convert ammonia into nitrite (NO 2-) then nitrate (NO 3-).

7. Berlin Method - Wikipedia

   en.wikipedia.org/wiki/Berlin_Method

   As an added measure, a protein skimmer is used to remove some of the dissolved organic compounds before they break down into ammonia, although skimmers do not remove ammonia from fish urea. The typical rule of thumb is to use from 1-2 lb (0.45 to 0.9 kg) of live rock per gallon (US) (3.7 liters) of aquarium water depending on the density of the ...