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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]
Arabesque. In dance (particularly ballet), arabesque (French: [aʁabɛsk]; literally, "in Arabic fashion") is a body position in which a dancer stands on one leg (the supporting leg) with the other leg (the working leg) extended, straight, behind the body. The arm positions can vary and are generally allongé. The foot of the supporting leg may ...
A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans. Tropical freshwater ...
On a visit to Seattle in 1997, John Christensen, owner of ChartHouse Learning, observed fish sellers at Pike Place Fish Market tossing trout and salmon through the air of the market, providing high energy that energized many pedestrians passing by on their lunch breaks. [2]
A freshwater aquarium with plants and various tropical fish. An aquarium (pl.: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic reptiles, such as turtles, and aquatic plants.
The first step of nitrification in the biofilter consumes alkalinity and lowers the pH of the system. [10] Keeping the pH in a suitable range (5.0-9.0 for freshwater systems) is crucial to maintain the health of both the fish and biofilter. pH is typically controlled by the addition of alkalinity in the form of lime (CaCO 3) or sodium hydroxide ...
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