a 400w in that wont create to much heat. a 265cfm fan would do fine imo for exhaust. then have a passive intake with a filter on it since its outside. biggest concern about it tho would be how cold it will get in your dark period. you might need a little space heater in their when its night.. and if its a metal it will heat up realy hot in the sun.
907PokeSmot Reviewed by 907PokeSmot on . Help me set up...please guys :( I have a little shed outside measuring 4'x4' and 6'high. I plan on using a 400w ballast which can take both halide and sodium. I will properly insulate and lightproof first. I am just unsure on ventilation. I am presuming that because i am outside i will experience less heat (i'm in the UK!) but am aware that i will still need some fresh air passing through. I guess i am just unsure on how much heat a 400w sodium bulb produces and am really confused on fans and filters etc. Can i get a Rating: 5