Hey guys. Still building my stealth cab and I'm having an issue. I decided to use a 400 watt hid in a cool tube, but it leaves no room to attach any ducting. I've only got about 3-4 inches on each side of the tube. I have some extremely powerful fans (computer fans on roids) I could mount on the inside of the cabinet either pulling air in, or pushing it out. These are industrial fans, 5.5" in diameter and about 2 inches thick. I'm thinking I could put on on the side pulling air thru the tube and out and another at the top of the cabinet venting out hot air. This would make me have to keep the tube stationary, and adjust the plant heights which is doable. The cabinet is 36" wide, 18" deep and 65" tall. Not sure why the pic is sideways. Any advice? Thanks