How to Place Pump In Koi Pond

WATER PUMP IN KOI POND -- There are two ways to place water pump in koi pond . It comes to the basic construction of your koi pond filtration system. You can use either a pump-fed or gravity-fed system. There are advantages and disadvantages to both so you need to carefully consider the alternatives. Pump-fed filters are perhaps the quickest and easiest form of filtration to install, because they can easily be added to any pond. On a pump-fed system, the pump is simply positioned in the pond, and the water is pumped from here to an above-ground filter system, which must be located so that the return is higher than the pond because the water returns to the pond via gravity.



Although they are easy to install, pump-fed systems do pose problems. With the pump located in the pond, this creates a potential obstacle for your Koi to damage themselves. Plus, with the pump located in the pond, it is pumping dirty water and so may require more frequent cleaning.

In the pump-fed koi pond, dirty water from the pond is pumped from the koi pond to an external filter and clean water is return to the pond by gravity. A pump-fed pond requires two design components. There has to be a pump in the pond and the water has to be pumped to a higher level than the pond to allow for a gravity return.

There are two main disadvantages with this type of design. The pump is in the pond pumping dirty water making it more susceptible to frequent clogging requiring maintenance. It also has to be powerful enough to lift the water to the filter system. This external filter system sitting higher than the koi pond can make hiding it with landscaping more difficult. However, an advantage of this arrangement is that a water feature such as a waterfall can be constructed to act as a water return.

Gravity-fed filters need to be considered at the construction stagGravity-fed pond with a bottom draine of your pond because it is very hard to install this style of filter at a later date. Gravity-fed systems work with a drain, commonly a 4in or 110mm version that is installed in the bottom of the pond. This drain connects to the filter system, which is located so that the top of the unit is the same height as the water in the pond, so if the pond is level with the ground, the filter will be sunk in the ground.

After the filter, a pump is installed, which pumps the clean, filtered water back to the pond. Gravity-fed system have many benefits in that they remove all waste from the pond continually, they are generally easy to maintain, and because the pump is only dealing with filtered water, there is little maintenance needed.



Source:
http://ezinearticles.com/?Pump-Fed-Or-Gravity-Fed-Koi-Pond---Make-the-Right-Choice&id=2675734
http://www.koimag.co.uk/advice/pond-equipment/pump-fed-or-gravity-fed
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