oh, also. is 86 deg during your light period? you could always prop open to tent and try and draw in fresh air via 12" fan. just keep it zipped during your sleep schedule. my plant were 70 deg at night and about 80-85 during the day.mostly in the afternoon though so i just left the grow room doors open during the hot period of the day and i was fine. hope this helps a little, im new here so i dont really expect any one to listen to me or anything,however its worth a shot just to see if it helps you like it did me.good luck!!!