Very true but my basement temp is about 67 F, I put 1' of styrofoam wall insulator underneath the tent to insulate it from the concrete. Once I plug the lights in I will have too watch my temps in the tent. I do have a lot of 6" flexipipe left so changing the inlet air (6" fan @ 365 CFM) to a ground pick up wont be a problem. My outlet fan is an 8" 795 CFM model. I have POTetiometers, (Really wanted to write that), to adjust the speeds.