Morning all... Okay - so I'm looking to get a heat source for my galvanized waterer and I'm looking at this, however...when you read the description - well...here..you tell me...look at bolded part: Automatic Electric Fountain Base may be used with any of our GALVANIZED FOUNTS . (Note: Can Not be used with the Dura Fount.)Thermostatically controlled so that the base will not heat unless the temperatures are cold enough to be needed. The thermostat keeps the water from overheating and the base at a safe temperature. Element carries a 1 year guarantee; 100 watt, 115 volt will keep founts open in single digits in a sheltered area. Not designed for outdoor use where there is apt to be single digit temps. or colder with wind chill. So - uhm...isnt that whats its original intent was, to keep water from freezing at those most crucial times?? We do get single digits here in VA sometimes and windchills, most definately we drop to single digits; not alot, but some. This year I think we will be hitting record low temps however. How do you purchase something that may not work in the times you need it most - and why wouldnt it?