On my first and second grow I had a pure sativa (no strain name) that yielded 8 oz per plant.... but also took 14 weeks to flower! I grew her a few times and let her go! Now my plants go into flower at about 24 inches and yield 2-4 ounces per plant w/out co2 (which I added for my current grow!). It is totally strain dependent.... I have some strains that easily yield 2x that of some others, but the quality is typically better on my smaller yield strains. SOG and scrog are the only way to go to get big yields indoors... and plenty of 1000 watters!!