So far my highest yielding strain was Crystal from marijuana-seed.nl, in aero it yielded 8.5 zips (dry), may I also note that this plant yielded this much and still at some point got some light pollination, from a male Mango, which leads me to the 2nd highest yielding, Mango/Crystal hybrid which yielded just under 8 zips dry, though it was grown in flood & drain in 6x6x6 rockwool cubes.
both were vegged 4-5 weeks and both were from seed, I actually have 7 Mango/Crystal girls going now, they are about 10 days from seed, doing quite well, they will veg for 4 weeks more so they will be about 5-6 weeks from seed before I do a Uncle Bens 4 cola top to 1/2 of them... I am now experimenting with them.
Also I have 2 plants Big Bud x White Widow doing a comparison of a FIM'd plant and a Uncle Ben 4 cola topping plant, want to see yield and what not... those plants have been in flower now a week... interested in the yields on these girls, will let ya know when they finish.