Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
Put a box fan at one end to keep the air circulating and cut down on moisture and help distribute heat ... ever since I started doing that in my greenhouses I had less algae. mildew and bug attacks - though considering where you live that may not be problems for you. I have mine on a timer and it goes on late afternoon and cuts off mid morning.
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