ISo I am getting ready for my first grow and have done a ton of research. My current set up Is as follows:
3ftx3ftx6ft tent
600w led that pulls 275 which has 2 fans&aluminum sink
6in vivosun carbon filter
260cfm duct fan boaster*
8ft exhaust our of tent
Ocsilatting fan inside grow tent

I have been running the light for 12 hours but my temp is always between 85to87 degrees f.

Does anyone know if this booster fan at 260cfm is the issue? i was going to buy 400cfm inline fan but was concerned of the walls sucking in because of small tent.

does anyone know if when you add plants does it absorb the heat and make it cooler, hotter, or makes no difference?
Tent is in closet so i cant reduce temp in room with thermostat

Any help before I plant my babies would be much appreciated, thanks in advance