"Lee Brouillet" wrote in message
...
Hmm, not quite sure what you mean. My check valve is between the intake
and
the pump. That way, the water doesn't drain back into the pond and the
pump
doesn't have to be re-primed (pain in the butt!) every time I shut the
system down. However your system is set up, that's where you want to put
it:
between the water source and the pump. Alternatively, I *don't* have a
check
valve between the waterfall and the pump/filter/UV; when I take the lid
off
the leaf basket on the pump, the water back-flows, so I have to be quick.
Hope that offers some insight.

It does...thanks. I don't think I will need a check valve in my system, as I
will not have a waterfall. We plan to install one next year as phase 2, but
that will be purely for aesthetics, and will be driven by it's own pump.

BV.