Here is my garden! I'm testing it right now, not fully finished with it. I have a passive intake, PVC 90 degree bend that I tried to use to cut down light leaks. I'm using a 4' inline fan with filter, and a fan control. With it on the lowest setting and the UFO LED light fan reversed the temps are running about 5 degrees hotter than room temp. Have a cheap humidity/temp sensor. Smart pot 3 gal inside. Used mylar blankets and spray adhesive to finish off inside. Thanks for looking!