Was just going through this thread, they didn't seem right to me from the start, they were turgid enough to suggest the fluid balance transpiration was ok, but the color and leaf set is wrong, seems to me its a PH/ feeding, additive thing or root issues. to troubleshoot your issues, you would have to look at a lot of things but you got something going wrong I don't think its VPD unless its way way out, seems like youre throwing money at it but there is basic growing issues, I don't say that in a bad way Im 70 been growing for 50 yrs, regardless of the system used, plants should be blemish free looking like show material, if they don't something is wrong.
9000 grams is nearly 20lb from 6 plants, youre not going to get anywhere near that from those plants, I run 6 plants in a 10 x 10 under 3000 watts of light and get around 8 pounds, that's with a 4 wk veg 8 wk flower, I cant imagine getting more than double that, but good luck to you if you can but I cant see it.
Im just kicking of my first Autopot grow transplanted today, Ive never grown in APs before, I want them pristine going in and all the way through, I see a lot of guys showing plants in APs that look not right to me, and then I see others that look great so Im looking forward to giving them a go.
Went in today
This was my last grow in a DYI wide tray NFT type thing growing on a strip of geo blanket with are constant trickle, they did well.