Hi! I am new to this forum. I hope you can help me.
I buried 115 feet of 4 inch perforated tubing 5 feet underground, I intend to heat/cool my greenhouse with circulating air through it. The greenhouse will will have volume of around 3500 cubic feet.
Can you recommend me how powerful the fan should be? Should I put maybe two (weaker) fans on both sides of the tube?
Any suggestions will be greatly appreciated.
Thanks!
Bor
Slovenia
