Quote:
Originally Posted by KarenO
As long as it doesnt freeze inside your greenhouse all will be well.
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I agree. I don't use heat unless the predicted low is about 35 or so. That gives room for error in the forecasting, plus allows for the freak circumstances when the greenhouse can actually dip below the outside temperature.
I made low tunnel-style hoops over my benches and covered that with plastic, then put the heater under that. It is a big improvement for me, when I reduce the area that I am trying to heat.