Hey there, im having a similar problem with my closet grow Alex, have a search round and readup on ventilation topics, also do a search for 'cool tubes' they might help you, anyways good luck.

Peace, and happy growing!
MikeOD Reviewed by MikeOD on . how to cool down a grow room i am growing in my cupboard and i think it is too hot for the plant. i already have a fan in there but with it just blowing inside it wont rid of get any heat, how can i cool it down, i am using a 250 watt hps Rating: 5