heat problem

[xrayx]

hi my fellow growers

ive got a major problem with heat in my grow tent. im growing 20 plants on an nft table under a 600w hps, ive got a exaust fan taking the heat out of my grow tent and an inlet opening ti let fresh air in, the fresh air isnt comin from outside its just coming from in my room outside grow tent.ive also got a small fan blowing on the light its self. despite all of this my tempiture is running at 93f while the light is on does any1 no of a way i can get the temp down with out getting a cool tube light, cos i no the temp will stress my plants into going male if this continues. any help or comments with be greatfull

peace

[Jdog7000]

Is the exaust fan on enough?it sounds like just not enough ventlation.Maybe the exaust needs to be coming straight from the tent or a duct for the air coming in from outside the room.

[jamstigator]

What's the temperature of the room in which the tent resides? And what are the specs on the exhaust fan?

[tadaa]

Right now I have a 600 watt light in my closet, inside a cab with the doors open. I have a Honeywell fan that I bought at walmart for 9.99 blowing directly on the bulb and the fan is about 12" from the bulb. My temps are maybe 70, 75 at the most. The trick is to get a powerful fan that is blowing on the bulb AS SOON AS THE LIGHT COMES ON, you can't wait till after the bulb has heated up.

It does such a good job that I'm confident when I get my new cabinet that is 20" x 70" x 48" that I will be able to have the doors closed with a 600watt light and the addition of a exhaust fan. Check out this fan for exhausting hot air, really good deal, 200cfm and it's only 43 bucks. Go to www.homedepot.com and type in TW108 in the seach box.