Can someone explain head height to me please. I have a 3000 gallon pond and wanted to get a new pump for my pond. My pond is only 4 feet deep. But the line outlet runs about 20 feet to the two barrel filters before going to the waterfall. My pump stopped working so wanted to get a new one. The pump that gave up was given to me so not sure what to get. All have different head heights. Would i be ok with a 9' head height. What do i need.
Thanks
Thanks