I have a shed that I'm using half of to make my full season room (veg/flower). I have a space sealed off measuring 54"x30"x79".
I've got a Hydroplanet 600w MH/HPS w/ digital dimmable ballast (250w, 400w, 600w, super lumen)
2 x 6" inline centrifugal fans 440cfm w/ built-in speed controller
The...