On Sun, 9 Dec 2007 14:32:08 CST, Hal wrote:

It is cheaper to wait and let it work as long as it will.

We've gotten really cold, so I don't think I could talk anyone into
changing out the wired sensor at this time. Last night the pond was 35F
when I turned the heater on. There is a light 1/2-1" coating of snow on the
screens. This morning, air temp is 20F, pond temp is 39F, so I know the
pond heater is working.

Good thing my mom gave us the money for Xmas to replace old water heater &
freezer so we're saving power there to go into the ponds. ;-) ~ jan
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Zone 7a, SE Washington State
Ponds: www.jjspond.us