I Need Expert Help PLEASE!!

hey all well my problem is heat. I bought a cool tube for my 400 watt lamp i have a closet roughly 12' x 2' x 7' it has 4 sliding doors. I am cooling the tube with 171 cfm inline jet fan with a few feet of ducting on both sides. I have an oscilating fan blwoing on the plants anohter fan blowing at the cool tube from below. my temps will get to 90 by the end of the cycle prolly. I just set it up and its 87 right now is this going to be to hot for my girls and how could i get it cooler. My room temp is about 80 with lights off but entire bedroom gets warmer with lights on. Im getting discouraged idk y i cant get a handle on temp anyone else grow in 80 degree ambient temp with HID. Even with the cool tube 4 feet away its hot is the tube not getting cool enough i can touch it its hot but doesnt burn. Am i doing something wrong?

please help me im getting desperate and i have a girl with only 2 or 3 weeks before harvest

thansk
-kb
I grow under a 400 watt bulb.My temp can reach 90 degrees all the time doesnt bother my plants.Try keeping your room cool inorder to make your closet cooler.Depends on what type of plant you have.
 
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