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2. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.

3. Powerhead (pump) - Wikipedia

   en.wikipedia.org/wiki/Powerhead_(pump)

   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 ...

4. Sump (aquarium) - Wikipedia

   en.wikipedia.org/wiki/Sump_(aquarium)

   A sump with three compartments including a protein skimmer. In fishkeeping, a sump is an accessory aquarium tank in which mechanical equipment is kept. [1] [2] A remote sump allows for a clutter-free display tank. It is found mainly in a reef aquarium or marine aquarium.

5. Aquarium filter - Wikipedia

   en.wikipedia.org/wiki/Aquarium_filter

   Prefiltered water is delivered to a perforated plate (drip plate). Prefiltering may take place in the aquarium via a foam block or sleeve in the overflow, or weir siphon, or it may be prefiltered by filter wool resting on the perforated plate. The waste laden water from the aquarium spreads over the drip plate, and rains down through a medium.

6. Aquarium - Wikipedia

   en.wikipedia.org/wiki/Aquarium

   Filtration system in a typical aquarium: (1) intake, (2) mechanical filtration, (3) chemical filtration, (4) biological filtration medium, (5) outflow to tank. The typical hobbyist aquarium includes a filtration system, an artificial lighting system, an air diffuser and pump, and a heater or chiller depending on the aquarium's inhabitants.

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