5 replies to this topic

[pondnewbie]

I'm trying to buy a correct size pump for my waterfall.
I need to measure pump head. Is it the distance between
surface of water and top of the waterfall? or distance between
surface of water and inlet of the waterfall. I have a biofall where inlet
from the pump is about 1.5ft below the top of the watefall and water fills up
bottom to top. Any help would be appreciated...

[undrtkr_00]

I'd say it's measured from the top of your lower water body (pond) to the top of the water in your waterfall.

[koiguy1969]

its from ponds surface to the filter falls inlet and every 10' of horizontal piping is equal to 1' vertical.

[pondnewbie]

Thanks for the reply
So it's the filterfall inlet..????

[koiguy1969]

yep

[DoDad]

Head also includes the size and length or your pipe (friction) also the numbers od 45's and 90's you use.