Pump Fish

By · Thursday, November 19th, 2009

Pump Fish

The pond pump is truly the "heart" of your pond. Are needed for a variety of functions – from the general circulation of power water features. The good news is that there is a wide range of variety of pumps available pool of reputable manufacturers. For almost any application, there several products available to choose from. The bad news is selecting the right pump for your needs can be a very daunting task. This article will provide a sound basis for selecting the right pump for your application pool.

Types of pond pumps

Submersible Pumps: Submersible pumps for ponds are installed under the water, usually in the deepest part of the lagoon. This kind of pump is generally suitable for ponds smaller, or water features that require less than 4,000 GPH. The main benefit of submersible pumps is that they are visually unobtrusive and implement voice very low. They are also very easy to install, make sure the cable length is sufficient for their needs. The disadvantages of a submersible pond pump is that it must be frequently removed from the pond for cleaning and maintenance. They also usually cost more to operate than external pond pump, although there have been some improvements recent significant efficiency submersible pump energy.

External Pumps: As its name implies, External Pond Pumps are designed to be installed outside the pond, or "online". External pond pumps are a better choice for medium and large ponds. They can handle greater flows of water (4000 to 10,000 LPH) and are less costly to operate. Other benefits of an external pump include ease of maintenance, increased half-life, and the ability replacement of items such as external pumps are encased in resin as a submersible pump. On the negative side, an external pump takes more time and effort to install, should be hidden from view, and are generally more expensive than submersible pond pumps.

Direct Drive Pumps: Direct Drive Pond Pumps are more common than external pumps because they have the ability to draw water toward them. Direct Drive pumps are suitable for applications that require a significant head height – as the upslope water pumping to a waterfall. They are generally more expensive to operate than a magnetic disk pool pump, but in many cases the only option when you need a considerable amount of water flow. If you're buying a direct drive submersible pump, make sure that is free from oil, the oil that drips can harm pond fish and aquatic plants. Magnetic Drive Pumps: Magnetic Dive Pond Pumps (or Mag Drive Pumps) are designed generally as submersible pumps as most are unable to draw water into the pump. The power is created through an electromagnetic field that turns the impeller. His main advantage is energy efficiency and longer life. In addition, Mag Drive Pond Pumps are easy to repair, usually all that is needed is a magnetic axis and the impeller (the only moving parts). The disadvantages are that they can not provide sufficient water flow for applications in the head high, and slightly more expensive direct drive pumps pond. In general, if you do not have a requirement of the head up and looking for a submersible pump, magnetic drive pond pump is the best option.

Air Pumps: Air Pumps Pond provides no water flow. They are based on the air pump after disseminated in small bubbles. Air pumps are most commonly used for winter pond, providing oxygenation and gas exchange without provide water flow.

Choosing the right size of pond pump

To choose the right size pond pump, first determine the correct application category: 1) filtration and recirculation, or 2) Water Features.

Seepage and recirculation: The general rule for application filtering and recirculating pump should turn the pond water for a minimum of once every two hours, and ideally once an hour. For example, if the pond is 3,000 gallons the ideal size is 3,000 GPH pump, but not less than 1,500 LPH. My preference staff are always err on the high end of the range. The pump flow can always be a bit limited, but never increased. Also, make sure your pump is the size suited to the specifications of your pool filter.

Water Features: The choice of the correct pump size for a feature water is a bit more involved. The first step is to determine how water flow you need at the point of discharge of water from the function itself. We will use a waterfall as an example like this is the most common water source. For every inch of waterfall width you need from 100 to 150 GPH. Therefore, if you have a 14 "wide waterfall dam will 1400 to 2100 LPH GPH of water flow on the edge of the dam.

The next step is to calculate the height of the head. Head height refers to the approximation of the distance vertical and horizontal, the water must travel from the bomb to the top of the waterfall. Horizontal distance is calculated at a ratio of 10:1, while the vertical distance is calculated in a 1:1 ratio. For example, if the horizontal distance from the pond pump waterfall is 30 ', this amounts to 3' of head height. If the vertical distance from the pump to the top of the waterfall is 7 ', this is equivalent to 7' of head height. Therefore, the total height of the head of this application is 10 '.

The last step is to examine the manufacturer's power curve for the type of pump you have selected to determine the proper pump size. Let's use the Cal Mag pump drive as an example. PWM3900 model is rated at 4,100 GPH of water flow in the pump discharge, but is estimated to flow 2280 GPH water to the height of a 10 'head. This would be a good choice for this particular example. Remember that it is always better to err on the top of the range of LPH, as this puts less pressure on the pump.

John B. Benjamin is the owner of The WaterGardener which provides a wide selection of pond, koi fish and water garden supplies at wholesale prices, as well as valuable information on building and maintaining your pond.

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