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Tropical Fruit Discussion / Re: cheapest ways to cool a greenhouse using little to no electricity ?
« on: January 01, 2021, 08:31:46 PM »
The designs that use large tubes underground and route the cool air to the green house seems like a great design that way you can cool in summer and heat greenhouse in the winter using underground temps but as I understand it you still need fans to move large volumes of air out the top in the summer time, anyone using that design ?