Hey fellas or ladies, I got a question. I have been working with a 150w HPS sun systems all in one, with the ballast and bulb all built into the hood, etc. I am wanting to move up to a 400W HPS. I am using a sealed and enclosed box with a passive intake and a 240cfm inline 6" fan exhausting. Temp stays good, no other problems. My question is how much more heat would a 400s HPs with a remote ballast make if I mount the ballast outside the box. Basically I am taking away the 150 all in one inside the box and replacing it with just the 400w bulb and reflector, mounting the ballast outside the box. How much heat does the ballast make in relation to the light?