thanks a lot to everyones information. the light itself is quite high from the plants so their direct heat isn't too bad, its the overall temperature of their chamber. I belive the problem is that it's a completely sealed chamber so it really traps the heat. I'll definitely try to find an attic fan with that much capacity, thanks OregonsDank. The problem is im in Vancouver BC and a lot of stores do not supply fans, excpet for heating fans, due to the season. Random question, other than killing/wilting the plants, what does overheating do to them, (other than lower the photosynthetic rate)?? thanks again to allll! ps. we've been spraying the clones with anti-wilt just so they don't wilt. But isn't the light intensity greatly reduced since the lights are so high (about 5.5 ft above the plants)?? Ok, thanks again.

LA MAREA (the high/tide)
la marea Reviewed by la marea on . Too much heat! hey anyone who can/will help!!! Ive got 15 clones under a 1000 WATT HPS. a fan connected to a cool tube, exits the room and hooks up to a carbon filter outside the room. the intake fan is on the floor and can move 90 cfm. the room is 90 cubic feet. overall the heat is about 89 degrees ferenheit. please heeeeeeelp with any ventilation ideas! Rating: 5