The pond is 10′ long x 2′ wide x 1′ deep. The pump is at one end and water is raised 1′ to a buried garden hose that is maybe 12′ long and then at the end it goes up 2′ to release the water over some rocks. I had a 330 gph pump that worked well but died. That size has been discontinued. Go smaller or larger? DON
Categorized | Waterfall Pumps
2 Responses to “What Size Water Pump Is Needed For My Pond/waterfall?”
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larger is ALWAYS better when it comes to this application! do you run your water through a biological filter medium of some sort? the ideal circulation rate for biological filtration is 3 times or more per hour that the entire volume of your pond water to be circulated.
Hi Don,
In my point of view it depend on the final effect that you want to make. If you are in the mood of water theraphy, mean that you like to the sound of the water fall, you may want to consider a pump size that a bit higher than your previous ones, and vice versa.
In a nutshell you should be able to determine the effect of the waterfall you need since you already have your previous ancient pump running before.This should be your best guideline to check the size of your new pump needs.
There is a bit of extra caution needed if you are thinking of using a larger size of pump, you should ensure that the pump are not sucking to quick of the water. If this is the case you might be end up having your pond drain half tank. You can get the circle time for the water flow base on the pump size from the catalog.I’m sure your hardware guy are gladly help you in understanding the matrix conversion Pond size over the pump size,since I can’t clarify in detail here about the graph reading. But in most cases I just relatively using the first option of comparing the ancient pump size with the new one.
Hope that help.
Fazla