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  2. sera (company) - Wikipedia

    en.wikipedia.org/wiki/Sera_(company)

    During the 1980s, Sera continued to broaden its offering with new lines of foods, vitamins, and technological products. Notably, the era featured the launch of the Sera Bio-Denitrator, the first device designed to biologically reduce nitrate levels in aquariums. [4] Sera products are sold in more than 80 countries. [citation needed] [5]

  3. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    In the artificial environment of the aquarium, the nitrogen cycle effectively ends with the production of nitrates. In order that the nitrate level does not build up to a harmful level regular partial water changes are required to remove the nitrates and introduce new, uncontaminated water. [8]

  4. 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 ]

  5. Recirculating aquaculture system - Wikipedia

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

    High levels of nitrite are also indicative of biofilter impending failure. Nitrate is the end-product of nitrification, and is the least toxic of the nitrogen compounds, with 96-hour exposure LC 50 values in freshwater in excess of 1,000 mg/L. [6]

  6. Protein skimmer - Wikipedia

    en.wikipedia.org/wiki/Protein_skimmer

    Protein skimming removes certain organic compounds, including proteins and amino acids found in food particles and fish waste, by using the polarity of the protein itself. . Due to their intrinsic charge, water-borne proteins are either repelled or attracted by the air–water interface and these molecules can be described as hydrophobic (such as fats or oils) or hydrophilic (such as salt ...

  7. Freshwater aquarium algae - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium_algae

    BBA may occur in both saltwater and freshwater aquaria. [16] Red spot algae may form a tenacious reddish-brown splotch or film on aquarium glass or plant leaves. It grows quickly and may be a symptom of high nitrates or iron. [17] These encrusting red algae may be referred to as a member of the genus Hildenbrandia. It is not especially common. [18]

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