I am planning a series of ponds, where the first pond (near the source of electricity) has the highest water level, the water flows to the second, lower pond, via a small water fall, and to a third, lowest pond, again via a small water fall. The pump, located in the first pond, has a fountain that sprays into the first pond, but I plan to place an underground pipe to pull water from the third, final pond.
Bird's eye view: ________________________ __________ / 2nd pond \ / 1st pond \ | | | | | | | >o< <--fountain (pump's output) | | . | | | | . | | | | . ~~~~~~ | | . ~~~~~~ <-- waterfall down to | | . ~~~~~~ 2nd pond | | . ~~~~~~ | | . | | | | . | | | \_____.____/ \__________!!!!!!!!!_____/ . !!!!!!!!! <--waterfall down to 3rd . __________!!!!!!!!!____________ . / 3rd pond \ . | | . | | . <--underground PVC pipe | . | | . | | . | | . | | . . . . . . . . . . <--water flows into pump here | | | | | | | | \_______________________________/
The pump is like this:
Water is pumped in through the "Flat Box Filter", then sprays out the fountain at the top. If I were to lengthen the bendy pipe, replacing it with 10-20' of underground PVC to pull water from the third pond, assuming the same width pipe as the bendy tube, would that reduce the power of the pump? Or because it is all submerged anyway and water pressure will equalize, would the pump impellers not have any additional strain?