Heating Problem

[DirkDigler]

I've recently expanded my grow closet's lighting. I now have three banks of 10 24 watt CFL that output 1600 lumens (48,000 lumens) as well as a 400 watt hps that outputs 55,000 lumens.

This is for a space roughly 1 1/2 x 3 feet, holding six plants. The problem is, its basically turning into an oven. If I close the closet door the temperature at the top of the plants can top out at about 110 degrees (I haven't let it stay that way long enough to hurt the plants). I decoupled the fan from a vent leading to the outside and just let it blow inside the room, I figured this was ok since its already past the carbon filter. This allowed the fan to be more powerful and increase it's airflow. After doing this the average temperature maxed out in the low 90's, still too high. So I'm at a loss for what to do right now.

I have fans blowing inside the closet to try keep heat from getting too high in specific spots but at best it lowers it maybe 1 or 2 degrees. And the HPS is already further from the plants than I would prefer (two feet).

I'm keeping the door to the closet cracked in the mean time and the temperature is stable in the low 80's which I think is acceptable

Is there anything short of turning off lights I haven't thought of?

[phatsesh101]

u need an exhuast man

[killerweed420]

If you have to use the carbon filter then your pretty much down to only one fix. Air conditioning.

[McDanger]

is the hps in a cool tube? I would assume that is where the majority of the heat is coming from. I use an old furnace blower fan for exhaust. with these 2 items combined you should be able to control the temps provided the temps where you get your fresh air from are reasonable.
If you move enough fresh air thru the room it won't have enough time to heat up.