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2. Aquarium lighting - Wikipedia

   en.wikipedia.org/wiki/Aquarium_lighting

   Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps. Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1] Compact fluorescent lighting with a compatible screw-in base is frequently used as a direct ...

3. Aquarium - Wikipedia

   en.wikipedia.org/wiki/Aquarium

   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.

4. Marine aquarium - Wikipedia

   en.wikipedia.org/wiki/Marine_aquarium

   A marine aquarium is an aquarium that keeps marine plants and animals in a contained environment. Marine aquaria are further subdivided by hobbyists into fish only ( FO ), fish only with live rock ( FOWLR ), and reef aquaria. Fish only tanks often showcase large or aggressive marine fish species and generally rely on mechanical and chemical ...

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6. Reef aquarium - Wikipedia

   en.wikipedia.org/wiki/Reef_aquarium

   Reef aquarium in Monaco. A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriately intense lighting, turbulent water movement, and more stable water chemistry ...

7. Lens hood - Wikipedia

   en.wikipedia.org/wiki/Lens_hood

   In photography, a lens hood or lens shade is a device used on the front end of a lens to block the Sun or other light source (s) to prevent glare and lens flare. [1] Lens hoods may also be used to protect the lens from scratches and the elements without having to put on a lens cover. The geometry of a lens hood is dependent on three parameters ...