"Mike Patterson" wrote in message
...
snip
Haven't gotten around to it yet, but I plan to run 1/4" tubing (like
that used for refrigerator icemakers) inside the 1.5" line for water.
Since flow volume isn't a big deal for topping up, I think this will
be OK. Still have lots of space to run other low-current wiring & such
through the 1.5" pipe if I want to.

I'd recommend using a larger water tube. How long does it take to fill up a
glass of water from the fridge? Multiply that 200 gallons, and you've got an
afternoon of sitting by the pond waiting for it to top off. As someone who
has a tendency to wander off 10 minutes after turning on the hose, to return
to a flooded back yard, I think you'd want something a little faster.

Sameer