"Grubber" wrote in message hlink.net...
"Steve Shapson" wrote in message
...
I've finished building my pond (18'x18'x2'/attached to a 55' long 2' wide
stream up to a waterfall at a grade 4 feet above the pond grade).

There are so many pumps on the market. I do not know where to go. I do
want
a good flow of water to make the waterfall dramatic. Does anyone care to
advise me on what pump I should obtain? I would want a pump which is
under
the water. I would want this pump to be effecient, using less energy than
some pump. Are there any good solar pumps?

There will be a lot of plants and few fish in this pond.
Thanks so much for any help.

--
Steve




I would echo Grubber's comments. For larger ponds such as yours I
highly recommend an external pump. I don't have any experience with
the Sequence pump that Grubber mentioned, I use the PerformancePro
Artesian and it is an excellent pump.

Another suggestion would be to get a pump a little bigger than you
need. You can add a valve on the outflow side of your pump to choke
it down some if you need to reduce flow. In other words, you can't
make it pump more water but you can make it pump less. (Note: never
put anything that restricts flow on the suction side ).

In sizing the pump you'll want to know the distance from water line to
the top of your water fall, this is expressed in head feet. You'll
want to make sure the pump is rated for at least that much head. If
your filter sits above water level you'll want to include its height
as well.

If you do go external and the pump will sit above the water line be
sure and get a self-priming pump. I know the Artesian is
self-priming, not sure about the sequence.

Good Luck.