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A switching or variable-voltage system (also known as a "wavemaker") is commonly used in reef aquaria to more closely simulate the movement of ocean water. [ 1 ] Water circulation is vital to proper biological filtration of most saltwater aquaria (particularly those using the Berlin Method ), and is useful in freshwater aquaria for allowing ...
Canister filters were initially designed to filter drinking water, under low pressure. Canister filters for aquariums [17] use high water pressure, from a properly powered pump, to force water through the dense filter media. A pump can draw water from an under-gravel filter, and run it into a canister for double filtration.
The stuffing box prevents water from entering the boat's hull. In many small fiberglass boats, for example, the stuffing box is mounted inboard near the point the shaft exits the hull . The "box" is a cylindrical assembly, typically of bronze, comprising a sleeve threaded on one end to accept adjusting and locking nuts.
Around 1908, the first mechanical aquarium air pump was invented, powered by running water, instead of electricity. [30] The introduction of the air pump into the hobby is considered by several historians of the hobby to be a pivotal moment in its development. [31] Pike in an aquarium c. 1908, at the Belle Isle Aquarium, Belle Isle Park
Aquascaping is the craft of arranging aquatic plants, as well as rocks, stones, cavework, or driftwood, in an aesthetically pleasing manner within an aquarium—in effect, gardening under water. Aquascape designs include a number of distinct styles, including the garden-like Dutch style and the Japanese-inspired nature style. [ 1 ]
The Adventure Aquarium, in an effort to reduce oceanic pollution, uses recyclable cutlery and plant-based straws in accordance with Fins for the Future, a Delaware shore conservation effort. [26] Previously to the COVID-19 pandemic, the aquarium held an annual Hippo Awareness festival that supported the Turgwe Hippo Trust. [27]
An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure. The tank is partially filled with air, whose compressibility cushions shock caused by water hammer [citation needed] and absorbs excess water pressure caused by thermal expansion. [1]
Pandalus borealis is one of the hardy species initially chosen to be kept in the Abyss Box Deep sea zones. The Abyss Box is a vessel containing 16 litres (3.5 imp gal; 4.2 US gal) of water at the very high pressure of 18 megapascals to simulate the natural underwater environment of bathyal fauna living at about 1,800 metres (5,900 ft) below the surface. [1]
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