thats gonna be a proper hot box witha 400hps

my extractor fuked up last night (faulty timer)

i still had a 95m3h inlet fan and a 12" ocilator goin but temp was 46c this morning

to keep my tent @ 26c i need a 590m3h on constant + inlet + circulator with the 600 hps my grow tent has 3-4m3 of airspace