dumb question?

what size is your room length, width, then heigth please? "A 400-watt HID delivers enough light to illuminate a 4x4 area well." This is straight out of Jorge Cervantes Medical Growers Bible.
 
4 x 4 = 16
3 1/2 x 5 =17.5
So I have an extra 1.5 square feet... I now have a calcualtor HAHAHHAAAA
 
400W HPS is perfect for you to flower under then. Less heat to worry about than the 600W. Keep to about 1sq/ft per plant 15 plants max. and you'll be very happy.
 
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