your leaves look more like heat stress than anything in combination of other things
I don't disagree... but one thing is for sure. The first run helps get the kinks worked out of a system. I fought symptoms of the problem (heat build up due to low outflow) for the last three months and then finally figured it out. I was also experiencing some odor issues b/c even though my duct work was extremely short, it was too restrictive on my 6" exhaust fan; I also learned that while it is great to see your tent pull a vacuum, if you don't open up some flow you might have heat issues; clearly I did, even though my CHH4C or whatever it is never read over 82 F the entire grow.
Now, I have my tent flowing well, odor problems are gone and I suspect heating problems gone too. I also wonder if my hot rod HPS bulb may be just too much.
Overall, I know my GDP (next run) will be better, they are looking quite exceptional already in veg.
But, I need some help to salvage what was almost a good run. Maybe time is all I need and keep watering to keep them swelling....
I don't know what else to do at this point. But man I have learned a lot!