i am planting my seeds right now they are big bang by greenhouse. i am planning on growing 6 plants 2 feet tall and was wondering how much i should expect to yield? the big bang is suppose to be around 550 gr/m2. i have a 400 hps and am going to use a metal hallide conversion bulb for veg. i am going to flower when they are about 10 inches. If i can get 6-8 ounces out of this i would be very happy. how much do you think i should get?