I'm not just a stoner, i'm a OLD stoner... the light covers 3x3= 9 sqft. and a 4 x 4 room = 16 sqft. ? would 2 lights do it then, since each light is 9 sqft.? I'm sorry i am not a construction fellow, so i dont quite understand the whole sq ft thing!? I got the 1200 thinking it covers a 4.6 x 4.6. which if you do the sq ft thing. 4.6 x 4.6 = 21.16 sqft. my room is a few inches under 4 x 4. so 4 x 4 = 16. my math then is 21.16sqft - 16.sqft = 5.16sqft (extra).. what am i missing? so i figured plenty of light.. but told it isn't?