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While very useful to reef aquarium keepers, halide lighting also uses a lot of electricity (150-400 watts being common) and produces copious amounts of heat. Most reef keepers mount halide bulbs at least one foot above their tank and some, due to the lights' heat output have had to add chillers to keep aquarium water cool.
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 than fish-only marine ...
A chase is an electrical application where strings of adjacent light bulbs cycle on and off frequently to give the illusion of lights moving along the string. With computerized lighting consoles, building chase sequences has become easier, while previously chases used mechanical means, such as a wheel with an electrified spindle which strikes electrical contacts for each circuit.
In a shark aquarium setup (preferably an oval-shaped tank for more active species), there should be much surface area (wide and long tanks with good gas exchange/more room for biological filtration and room for sharks to swim, glide, and turn with little constraint opposed to tall, thin tanks), fine substrate (coarse substrate can irritate the ...
The first two unmanned lights in the Florida Keys, the Molasses Reef Light and the Pacific Reef Light, were built as square pyramidal towers to the same plan in 1921. The Hen and Chickens Shoal Light was the smallest of these lights, and the only one built as a triangular pyramidal tower.
Sombrero Key Light is located offshore of Vaca Key in Marathon, Florida. [2] The lighthouse is located on a mostly submerged reef . The name Sombrero Key goes back to the Spanish , and old charts show a small island at the spot, but by the later 19th Century the island had eroded, with some parts of the reef exposed at low tide.
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