Interesting UPDATE:::

Yesterday, I got home... I found out that my exhaust fan (300CFM) wasn't turned ON. Something went wrong... not sure what.

In any event, here's the cool-tube related information:
At 5pm, my 400W MH turned ON inside the cool tube.
At 5:04pm My 50CFM fart fan cooling the cool tube turned ON.
The 300CFM exhaust fan did NOT turn ON at 4:52pm.

When I arrived home, and got into the room, I immediately noticed the 300CFM wasn't running.

The temperatures where at 94.2F
This was, exactly 2 hours and 20 minutes since the 400W MH turned ON.

Sooo... nothing, maybe that helps somebody.

Peace to all,

-turtle420
.