Hey guys so after 4 failed(heat problems, humidity, air leaks) grow boxes (pc, mini fridges, wooden homemade) i wanted too just throw in the towel after spending 300$ and not seeing any chance of success. but after watching my lemon Kush and Hawaiian haze sprout and feeling bad that i was about to just let them die, so i decided to just make one more attempt! My current setup will be: 240cfm duct booster fan 150w hps sun system Coco coir/perlite mix My box is a follows, 22" wide 46" tall 28"deep That together comes to a minimum of i believe is 80-100 cfm needed. The box was a dish washer, i picked out because the door automatically shuts and seals which i can take the springs of it that becomes a problem. I'll be trying to make a diy air duct until i can see positive progress and buy one My questions are: Well the fan be to big? How many plants would at least fit? could i run into any problems? Would two 6" intake holes be perfect? Thanks everyone I'll post pictures if anyone wants them. I just really need some hope!