Hi Kierten;

Not sure about the plastic but I build a small waterfall and pond in the
back and the pump uses about 90 watts per hour. About like running a light.
The water fall I have is about four feet high and has a flow over and a
cascade.

Doug

"k conover" wrote in message
...
I'm considering adding a small waterfall to my pond. My yard has a
natural
slope, so it shouldn't be too hard...the pre-fab fiberglass ones seem
easiest, but are they hard to attach rocks to cover the black color?
Also, how does it impact one's utility bill to add a small waterfall,
since you have to have something with the power to pull the water back up
the line to go over the falls?
Thanks,
Kirsten