Hood Temp?

[sleeman]

I am finally putting the ventilation in my tank. With the top doors open and the 2 MH's blaring it looks like a grow op in our house. The tank is built into the wall, and I didn't want to have a couple of fan vents in the front. I have drilled a 4" hole in the floor and plumbed in solid dryer venting to the top of the tank. Actually above the MH's. The fan (100cfm) is in the basement sucking the air from the tank. I have also drilled two 2" holes for cool air return from the basement. The temp above the tank (actually above the lights) when all the doors are closed is 31C. Is this still too warm, or should I be happy with this temp?

Cheers,

Al