how do i ventilate

[skell1982]

hi i have a room in my celler. measurements are: 5f length x 4f width x 6f height. im gona use the Atami Wilma 8 Pot Hydroponics System and Sun System VII 800 Watt Super Spectrum light. i like this light coz it uses both ends of the light spectrum of MH and HPS 2gether.i dont mind paying xtra for bigger buds. i dnt know how im gona ventilate, they is no gaps or windows in this room, the only opening is the door from my celler to the room (it used to be a back door leading to yard, but has been bricked up) i want to ventilate away from celler. so i plan on knocking a brick out and running a vent pipe inside a fake drain pipe, up 2 the top of my kitchen roof( its an extension, so its not 2 high). but how big does the hole have to be? and how do i do all this.its the only thing i cant work out. oh and anuva thing do i have to get fresh air in, if so should i make 2 holes in the wall? 1 hole 4 air in n 1 hole 4 air out. plz help thanks here are pics
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[mcdandc]

I would add a louver vent to the door bottom, and place your exhaust intake as high as possible. You'll need to add one or two light brakes on the door.

[Don Piano]

Your pics do not work, I'd post them directly on this site from your computer.

If you use an 8" fan you will need a whole brick removed from the bottom for intake air.

Ventilation is not going to be a problem here. Work out the rest of the build now and tailor your ventilation to suit, you have many many many options (Hope you have a hammerdrill.) . You my friend have that luxury, alot of us don't, most have to build around our ventilation. Good luck.

sample pic