I cant remember, is your pond covered?
what was the temp before and after adding the heater? does this heater turn off at
34o or so? Ingrid

Only covered with screen door stuff, so doesn't retain much heat. The
heater is suppose to turn off at a point.... but the point seems to be
45ishF. ~ jan
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Zone 7a, SE Washington State
Ponds: www.jjspond.us