Loft Hatch Vents?? how

[DrGreen]

loft air is coming from eves anway i guess lol, so yea aslogn as i remove the tent air outside, i cant see why keeping my intake inside loft instead of eves be bad, if anythign it warms it slightly , damn bank holiday = shop shut = no 6inch duckt,

im using 8inch for passive intake and 6inch fan out, i think im gona swap the intake to 6 or 4 = more neg

[Hopper]

I'm the same mate atm, I'm passive air intake and it's cool with extraction going out of the whole room.