heat problem

ok so i have a grow closet setup. 4.5 ft wide 18in. deep 8 ft. tall. ive lined the walls with mylar. i got my light yesterday. its a 55k lumen fluorecscent grow light. i can tell its heating the room up too much. i can get a dehumidifier for the high humidity but what can i do about the heat? it is a rented house so i cannot go cutting holes in the walls. i have a fan going but it just blows the hot air around. any ideas are much appreciated. also what his the highest temp that is ok for mj to grow? id say its 85 to95 or more in there.

thanks!

get a thermometer in there first to know what your temps are. its alot easier to control, when you know what is going on in there. Why are you concerned about cutting any holes? you can always fix them when your done. 85 isnt really that bad.

85 is perfectly fine... if it starts getting into the 90's + it may start to be a problem... as for the humidity... thats not usually an issue till late growth... due to bud rot.... as for now u want humidity around 50% ... late grow u want it lower... why would u think the heat is too high?.... pick up a thermomiter/hygrometer asap... they are very cheap if your plants are having negative effects its probably not the light... unless its way way to close or way way to hot in there..

dude get sum fans in there,ya gota let them breeth,it also helps wif co2,if you want things to work out ya gota do it prperly man,also im shour theres shitloads on this RIU site that will help you....peace