help with my yield

ok i got a 4x4 ebb flow...1000 watt light..be useing bc nuterients.useing 12 plant start flowering around 20" tall..only been yielding around 120 grams..room temps are 72 humidity around 40%..been useing bag seed so strain unknown...with this set up what should my yield be???and what strain should i try wanting to get yield way up??please help this is my 4th grow...about to give up!!!

if the genetics are no good you will never get good yields, go for something with a good history, say bubba kush or northern lights etc. you should be aiming for 500grams

how about bubblegum?

why duplicate threads all over forums? Start one in the right place and get a real discussion going...