What could I do better? 8-11 OZ AppleJack under 600HPS per cycle

Hey guys, Just wondering what I could do better to get some higher yields. I'm running a 600W HPS in my flower room and am flowering AppleJack which is a 10 week strain. I have a veg room so theres a constant supply of clones. I usually flower either 8-12 plants and usually always end up right around the same dried weight. I veg for about two months, but I think I'm vegging in too small of pots, due to restricted space in my Veg room. Anyone have any ideas? I'm using the full Bio Canna line, plus super thrive, and great white. Thanks for the help

TWIST

How big is your flowering. Room? Whats the final container size for flowering? What type hood do you Use?

I suspect if you decreas plant numbers and increase pot size and maximize your lights coverage accordinly you can pull almost an elbow. Have no experience with the strain so maybe your hitting the limits but if you get more descriptive with yor setup maybe you can redial your settings

Room size is about 3.5'X4'. Final pot size I believe is either 2 or 3 gallon. My soil mix is about 1:1:.5, sunshine mix, coco choir, and worm castings. It's an aircooled hydrofarm hood. The strain is supposed to be a cross of white widow and Jack herer.

Id say give it a go with 5 or 7 gal pots. 6 plants. Thats 30 or 42 gal s of soil, meaning i would truly expect an increase from 7 gal pots because 12 3 gal pots would be 36 gallons of soil . I suspect 5s might work out just as well because you will be giving the plants more rootspace and mor growspace.

What size pot should I run through veg?

Transplan into final container 1-2 weeks before flowering. Maybe 3 weeks if you choose to go with 7s, but you'll have to experiment. That means theyll be vegging inthe smaller container fir 5-7 weeks, so if you can fit them in 3 gallons thats fir the best, but its depending on you veg space