The pump in your pond will be used for circulating water all over the falls.In addition, your pond critters as well as plants get proper aeration too. This means that you choose the right pump so that you get adequate flow of water for your waterfall besides the proper water quality to maintain your pond ecosystem in the right way.
With so many pond pumps in the market, choosing the right one can be overwhelming. This means that you must know the most important features that you need to consider before buying the pond pump. A few of these features are given here.
You must know the amount of water flow that you need. This means that your waterfall should not be just a trickle. After all, the sound of a gurgling waterfall is what all pond owners crave for. This means that you have to consider the amount of water that you wish to flow over your waterfall as well as the width of your waterfall.
In case of your pond, you would require that all the water in the pond must circulate at least once in every 2 hours. And in case there are fish in the pond, it means that more filtration will be required. In the case of pond set-ups, it is the pump that is driving water through its filtration system. In case you provide more flow, there would be more filtration. Even though the flow should increase if there are fish, but it should not exceed what the pond can handle. Also, you need to keep in mind that it is better to have fewer but happier fish. This is because you need to allow for growth as well breeding too.
Check out http://pondpumpusa.com/ to know the size of the pump that you want. This will mainly depend on the amount of flow that is required. This will be based on the amount of resistance that the pump is pushing. This would be based on the interactions of flow rate, pipe length, pipe diameter, elevation, as well as pipe material. Higher the resistance, the stronger the pump that will be required. This is because more the resistance, lesser will be the actual flow that will be needed.
You need to calculate the cost of running the pump too. This is because your pump is going to run through most of the year, or even the whole year. This means that you cannot ignore the electricity costs. So check out the watts rating on your pond pump to know the amount of power drawn by the pump. Now multiply this by the time that you would require your pond pump to run. Now multiply this by the cost of electricity in your area. This way you get the cost per month of running your pond pump.
Once you check out http://pondpumpusa.com/ you would realize that reliability is the biggest factor for you as your pump will be running practically non-stop the whole day, and that too for most of the year or even the whole year. This shows how important reliability of the pump for you. In case your pump dies, even your pond will begin to suffocate.