I have a 250w cmh in a wardrobe 18"d 36" w 48" tall. I have a growbrite 4" inline supposed to be around 160cfm, the light is in a standard htg wing reflector, about 8" from tops, passive intake is 5 2" holes, ambient temps are 70-73, box temps are 81-83. No matter how high or low i turn my fan...