If what you say is correct, the pump has to be located lower than the bottom
of the pool. In any event, if you can't drain it or blow the water out of
the line, or use pool antifreeze, use a low wattage heat tape on the pipe
and insulate around it. That would be the least costly solution
"Kyle Boatright" wrote in message
...
Our pool has a design flaw (or maybe not, I've never paid much attention
to how other pools are done)..

Where the main drain line exits the ground and goes into the pump area,
there is a 4' or 6' length of PVC pipe that is exposed, and can't be
drained without draining the entire pool. The question is: How to freeze
protect this piece of pipe? Thermostat regulated heat tape and some wrap
on insulation? Build a box around it with a lightbulb inside? Maybe one
of those 1,000 watt ceramic heaters with a thermostat?

I'm in Atlanta, and our winters usually have a few days (or nights) of
sub-20 weather, with a rare plunge below 10, and the very rare plunge
below 0.

Suggestions appreciated.