Most of my pond floor is about 12" under water - a little area is 18"
or so. I will probably have to move all the liles into the 18" area
for them to survive the winter which wouldn't leave any room for the
pump/fish. Can the lilies survive here (NE Ohio) in the 12" water (top
of the planter only 6" from the surface)? That would leave me room for
the pump and fish lower down...

Derek Broughton wrote:
wrote:

Hi - thanks for the response - firstly, I have water lilies and such in
the pond and can't just sweep the hose over the top.

Sure you can. Lilies are tougher than that.

Second, if it
won't get all the duckweed, won't it just grow back in a few days
anyway?

It doesn't grow _quite_ that fast :-)

What would be the effect of adding some goldfish (to eat the
duckweed)?

That would help.

Would I need to keep the waterfall pump running all winter
(zone 4/5) if I did that so the fish don't die?

No. If your pond is deeper than a couple of feet (3' would be even better),
you should have no trouble with the goldfish, and the waterfall would be
_more_ likely to cause problems, rather than less.
--
derek