Water Pump Parts for upkeep and maintenance of aquarium water pumps

Three of the most popular
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Aeration pumps take advantage of the force air places on water in a tube. As air is pumped into a water tube, the continuous stream of rising bubbles “drags” water along its upward motion. Aeration filters are very inexpensive and commonly used in small aquariums up to 20 gallons. A vibrating pump creates air pressure along a tube and is connected to either the base of the intake or the return part of the filter. If the pump is connected to the return tube, a siphon is used to bring the water into the filter. If the pump is connected to intake tube, gravity is used to return the water.
Aquarium pumps are essential water circulation devices for freshwater and saltwater aquariums
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External aquarium pumps are the best choice for "high head" applications when water needs to be pumped a long distance vertically. Aquarium water pumps from , Pan World and are ideal for these scenarios. These brand pumps are built to pump water up long distances without losing too much flow. We have submersible water pumps and powerheads for your pond and aquarium.
Photo provided by FlickrSpeed Water Pumps for you marine, reef, fish tank, and freshwater aquarium.
Photo provided by FlickrWater Pumps for Freshwater and Saltwater Aquariums - Big Al's Pets
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Probably one of the most ubiquitous and necessary requirements in any aquarium is the proper movement of water within, as well as to and from, the tank. While for many years the main way this was done in tanks was through air stones and lift tubes, most modern aquarium systems rely on electric water pumps of one form or another. Water pumps are typically more powerful, quieter and much more flexible in terms of the applications they can be used for than their earlier air-powered counter parts. The goal of this article, then, is to describe how these water pumps operate, how one goes about selecting a pump for a given application and then how best to install or place your pump for that use.The other type of water/fluid pump, sometimes used in more complex aquarium systems, is known as a positive displacement pump. These pumps are normally characterized by one of two types: diaphragm pumps or peristaltic pumps. Both of these pumps work on a similar principle - water is first sucked into a chamber and then pushed out that chamber by some form of volume displacement, similar to the way the human heart works. Diagram 2 illustrates the essential parts of a diaphragm pump. Operation of the diaphragm pump starts with the diaphragm being moved by a connecting rod, which leads to a motor/gear system (normally attached to the diaphragm's center). As the diaphragm is pulled out, it creates a low-pressure area that sucks water into it through an input check valve (a check valve only allows water to flow in one direction), thereby filling the chamber created by the displacement of the diaphragm. When the diaphragm movement reaches its limit, it then starts to reverse its direction and starts collapsing the chamber it created; this collapsing of the chamber causes the water in it to be pushed/pumped out a second check valve outlet. As can be seen, a pump of this type is not continuous but delivers its contents (i.e., fluid being pumped) in pulses. By controlling the displacement of the diaphragm and by controlling the rate that it is moved in and out, the effective pump flow rate can be precisely adjusted. That precise control of flow is the reason that these pumps are normally used for applications such as trace element addition and top-off or evaporation replenishment systems. While there are various types of water pumps used in aquariums today, there are really only two which are common. Let's first look at the one which has come to dominate the aquarium industry: the centrifugal pump. Diagram 1 shows the interior of the wet portion of a centrifugal pump (that portion of the pump that makes contact with the fluid being pumped). The pump's operation is as follows: an electrical motor rotates a vane assembly or impeller within the main housing or volute of the pump. The pump housing has both an inlet (where the water comes in) and an outlet (where the water is pumped out); as the impeller rotates, it moves water from the inlet (which is located near the center of rotation of the impeller) along the surfaces of the impeller to the outer portions of the volute by means of centrifugal force (thus, its name centrifugal pump). This water, as it collects in the outer regions of the volute, is directed to the outlet. The water leaving the outlet causes the water pressure to drop at the inlet, which in turn, allows the pump to suck in new water at the inlet to match the rate it is leaving the outlet. The actual flow rate of a pump depends on several factors; most of which will be discussed later, but motor power/speed, impeller design and inlet/outlet sizes all play a significant role.Some water pumps can even assist with draining and refilling your aquarium to assist with cleaning, while others can even mix saltwater in holding tanks to prepare it for a water change.