http://boards.cannabis.com/basic-gro...-dankness.html
Read this. Really.

The plants and their pots and soil will stand as high as you let them. You can train them to stay short, but you still want a grow area at least 6 feet tall so you have room for lights and ventilation. It's okay for the leaves to touch the sides.
Use a light cycle that gives at least 18 hours of day per 24 hour cycle during veg. You can even go to constant light.
NL is not too smelly as strains go but still you might find yourself getting a carbon filter (do it as soon as the first guest to your apartment starts sniffing the air like a hungry dog; guests will smell it before you do) so plan ahead to get a decent exhaust fan.