i use a 8in 42.5length aircooled
the lightspread with aircooled vs cooltube is insane
i reccomend the hoo das to concentrate your light.
my 5x5x5 room is DARK above my hood.
i run a 600w bulb
fuck ya get the hood
get one that covers like 75% of your tent
a 3x3 get like a 24in hood. gives you...