When owning an artificial outdoor water feature such as ponds, it is very important to utilize equipments like pump in order to keep the water flowing and circulating in and around the water feature. Take note that when water in a pond is too tight or stagnant, the more susceptible it becomes to aquatic organisms such as bacteria, virus, parasites, insect larvae and algae blooms, which can potentially affect the quality of water, cause harm to fish health and destroy the natural beauty of the pond.
Perhaps the most common type of pump used in keeping a garden pond is the submersible water pump. It is because of its many advantages and very few drawbacks. This pond equipment does not only help in moving the entire pond water in an hour, but also in driving the filtering system more efficiently. But unlike any other pond pumps, this one does not produce much noise since it is installed at the bottom of the pond, giving you a more relaxing ambiance that is soothing to both eye and ear.
They are also less expensive than surface pumps and solar-powered pumps, making it a perfect choice for most pond keepers. However, you must keep in mind that not all submersible pond pumps available in the market today are the same. It is because there are pumps that are manufactured with less quality, while there are some that offer more value, giving you a more sensible and reliable equipment that you can use for a very long time.
How do submersible pond pumps work?
Basically, this pond equipment has three essential parts, which include the motor, impeller and volute. The motor of a pump consists of a mechanical section and electrical elements that drive it and make it work effectively. The impeller, on the other hand, is where the centrifugal action comes in, directly influencing its performance. It typically consists of angled blades or vanes that rotate within the pump. In case your pump has to handle solids, it is best to choose pumps that have widely spaced vanes in order to get the kind of pressure you need.
The third vital part of a pump is the volute, also known as the diffuser. This one directly affects the pressure of the pump, which is responsible for producing and determining the proper discharge pipe diameter. Understanding the essential parts of a pump can help you specify the necessary pipe work for your fish pond when your build it. But aside from these vital parts, most submersible pond pumps also have a strainer on the inlet to prevent fish and debris from being sucked into the pump.
How to choose the right pump for your pond?
When buying for a submersible pond pump, there are few things that you need to take into consideration. These are the flow rate and the water head or pressure. Flow rate is the number of liters or gallons of water that needs to be pumped in an hour. Ideally, it is best to have a pump that can handle the volume of water in your fish pond more efficiently. Therefore, the larger the pond the more powerful the pump you will need. Additionally, choose the one that can churn up sand and dirt in the pond because this in itself will make the water murky.
The second key factor that needs to be taken into account is the water head, which is essentially the height to which a pump is able to spurt water. It is commonly measured from the surface of the water in the pond to the top of the spurting water. Sizes for water head ranges from 900 millimeters to 1.8 meters. Ultimately, you need to consider every aspect of your pond when choosing the right size and type of pump for your water feature such as the total volume of water that needs to be moved, the need for high water head and the required flow rate.
Additionally, do not forget that the flow rate and water head work hand in hand with one another. You should also take into consideration the friction loss. Keep in mind that the more pipe work the water has to flow through the more friction loss there will be. This is because of the extent of resistance it experiences flowing through the pipes. In case of doubt, do not hesitate to ask for some advice from a local dealer or from professional aquarists to guide you through.