1) Lower your lights to about half that distance. Especially with a light mover.
2) Dump the GDP, run all LUI.
3) If you're not using brand new bulbs every round, make that part of your routine.
4) Throw in another 1000w MH in the middle, dropped down bare bulb on a light mover.
5) Extend your veg time, and give them a few extra days at the end of flowering as well.
6) Try a different base nutrient. Try more additives!
7) If you don't already veg under HID, start now.
8) If you're not at 1500 ppm, get there.
9) Definitely make sure you SCROG. Canopy management is crucial.
10) Play music to your plants, or if at all possible, sing personally-written love songs to them. They go nuts for that shit.
We know # means lbs. You said you can't break 2 lbs per 1kW but then you said you max out at 7 lbs 10 oz, which makes absolutely no sense.
7 lbs 10 oz > 2 lbs
The more you top, the more veg time you will require for those tops to even out and become the "alpha colas"
Your reasons could be strain specific. Could be environmental. Light Penetration. Way too many variables to gove you a full answer. But keep trying, you will get it eventually.
i only have co2 in my veg and not flower room right now. is it a big difference if i had it in flower?
milehigh- hahah oh my badd! i thought u meant 1500 ppm with my nutes levels lol. but i'll difinetley bump up my co2 to 1500. but i only have co2 in my veg and not flower room right now. is it a big difference if i had it in flower?