you people SUCK, why so pessamistic? A g per watt is Easy peasy japanesey...... at least for some of the people i have met in the past.......... I met someone who could pull a little over 3lbs off a 600............ top that....... you basically need to provide the most stress free enviornment possible...... and its not so much the strain, but you cant expect a nevilles haze or crazy lanker of a sativa to act like an indicar.......... haha indicar, that sounds like indy car............ but any way.......... pulling 450 grams from a 400 watt light is a little over a gpw, totally possible, no stress, maximize light space (SCROG) or sog or Both at least not with 90% of the skunkified indysats you will find on the market these days........... and pump that biatch in flowering, my amigo pulled the 3 elbows off PPP under a 600 ........... you just need to dial your setup......... comeone I started the GPW thread and no one is posting, what no one out there can pull more than 1 gpw..... come on guys thats sad.......... DUB on OG almost made it with FLOUROS!!!!!!!!! he got like .75 gpw FROM FLOUROS..... jeez..... I know there are freedom bucket abusers out there, that are just too nasty to hold it in any more......... show us how its done!!!! I heard one guy on the bog forum pulled something like 27-32 zips from one plant in a freedom bucket.............I guess its just about being efficient, and none of us are efficient a la momenta...........anyone even close to a gpw?