Temps in closet grow getting over 90 degress HElP!!!

i was wondering if dark curling down leaves on ?the plants are 3-4 weeks old if that.i kno i sould set up exqust but its a coset and dont wana put holes in the wal cause i wil be expanding to a few tents and firer up my 400 watt mhi spay wit bubby water which i heard cos helps stand high temps .i was guna try a new bag tht relases cos steady but u cant reguate the out coming co2. any ideas would be very helpful thank u

pics will help. also, try writing in english, so people can understand what you want to say. cuz I have no clue.

im doing a closet grow too i keep the ac on , i would raise the lights a little till you get it figured out to you dont get males or hermies