4X4 Tent, 400watt HID or T5 lights?

I already have a 1000watt flower room, now I am making a grow tent inside the same room.

My question is, the tent has one 7" out take fan on the top to push the hot air out, but I dont know if it would cool down the tent enough for a 400 watt HID. Anyways, my alternative was to get T5s, but you have to keep them so close to the plants plus I plan on growing 9 plants for 5 weeks.

So, would the 400watt HID be too hot for a 4X4 tent? The height on the tent is 6 feet.

Thx

400 watt light isnt too big for a 4x4 tent, what is the cfm rating of the fan and your intake air temps?

We used to run a 600 watt in a 3x3x6 and with the proper ventilation never had heat problems.

That is great news. I dont know the cfm, it feels like a fan on the low setting if that helps.

If you can get a high output t5 for seedlings and veg. then HPS for flowering. It cost a bit more but in my opinion its the best combo

or, you could even do a combo with some cfl. and reg flours for side lighting, ect. i just ordered a 400 watt hps from htg, not here yet, i have 9 girls under cfl and flours right now and when my hps gets here im gonna take some cuttings and a couple t 12s away from the set up, leave some cfl's, and make mother/clone station.

An air cooled hood will help a lot. I'm running a 400w HPS in a 36"x20" cab currently and my next flower is going to be a 600w HPS in a 48"x24" tent.

600 watt hps!!