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  2. Recirculating aquaculture system - Wikipedia

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

    Recirculating aquaculture system. Recirculating aquaculture systems (RAS) are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. [ 1 ] Other types of filtration and environmental control are often also necessary to maintain clean water and provide a ...

  3. Fishkeeping - Wikipedia

    en.wikipedia.org/wiki/Fishkeeping

    Nitrites are then further broken down into the less toxic nitrates which can be absorbed by aquarium plants and nitrates absorbing filter media. Aquarists also use water changes as a way to keep these toxins under control by removing water from the aquarium and vacuuming fish waste and food from the gravel and replacing it with fresh, treated ...

  4. Aquaponics - Wikipedia

    en.wikipedia.org/wiki/Aquaponics

    Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants. [ 1 ][ 2 ] Plants are grown in hydroponics systems, with their roots ...

  5. Fish farming - Wikipedia

    en.wikipedia.org/wiki/Fish_farming

    Fish farming. A fish farm on the coast of Euboea island, in South Euboean Gulf, Greece. Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture, which is the controlled cultivation and harvesting of aquatic animals ...

  6. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation ...

  7. Nitrification - Wikipedia

    en.wikipedia.org/wiki/Nitrification

    Nitrification is the biological oxidation of ammonia to nitrate via the intermediary nitrite. Nitrification is an important step in the nitrogen cycle in soil. The process of complete nitrification may occur through separate organisms [ 1 ] or entirely within one organism, as in comammox bacteria.

  8. 32 tips for taking care of fish - AOL

    www.aol.com/32-tips-taking-care-fish-080000438.html

    32 Top tips for taking care of fish. 1. Keep fish in a tank rather than a bowl. Two goldfish in bowl. You might have spotted the two terms being used interchangeably, but when you look beyond the ...

  9. Freshwater aquarium algae - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium_algae

    Blue green algae growing on the substrate of a fresh water aquarium. Although colloquially called algae, blue-green algae(BGA) is a type of cyanobacteria. It can present with several different colors. While there are many BGA species, the most common type found in aquaria is referred to as "slime algae".

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