3ft*3ft=9sq.ft
10800lumens/9sq.ft=1200lumens psf
erm, i also noticed, elzz, that you said at the end, 2 compacts.. she said 4.. and by your calculations it looks like you started with 4 compacts.. erm.. well... u know what im saying.. i hope
anyway, get some sleep or lay off the weed for a little bit till u can think straight again
