what are you saying? [FONT=Arial, Helvetica, sans-serif]150x150x200cm = 5feet² and the tallness for every tent is 200cm= 6.5 feet tall.500? unrealistic. your room would have to be 12 feet tall.......lol. come on man......you're shooting for set yields on your first grow? grow 6 plants, leave a nice amount of room to move around, and have a good time, and LEARN.
if it wasn't for "dumbass Americans," you'd be eating weinerschnitzel and singing "Deutschland Uber Ales."