"Lee B." wrote in message
...
Do I understand what you're saying to mean that you have no cover above
the
drain? If so, then that's your problem.. Water will take the path of least
resistance: it will draw from straight above rather than be forced to suck
from the bottom. Experiments were made using the lid of a trashcan for a
mold, then filling it with concrete with little PVC "legs" to keep it
elevated above the bottom by an inch or so. It didn't work too well,
because
there wasn't enough room for "draw". However, same concept using a terra
cotta bowl, *partially* filled with concrete allows room for the water to
flow - and it will work. However, *some* kind of cover has to be placed
over the open hole or it won't pull from the bottom.

Is that what you meant, or did I misinterpret?
snip

Zactly. I installed the plumbing, the liner, and filled the pond. I have the
diffuser parts, I just never built it and installed it. I know, naughty,
naughty. But with that big hole in the ground...I had to get it full...I
didn't yet have my diffuser designed and didn't want to wait. So this year,
I'll just have to do some swimming.


--
BV.
www.iheartmypond.com