Indoor Autos gone badddd

[Kromazone]

hey guys..ive got sum severe leaf curl (up) on several autos ive got in 5gal dwc.
From what ive been reading it could be due to many factors..too much heat overfed underwatered....im not sure .so im posting pix to show you guys where i'm at


strains are:
Pandora
Fast bud #2
Vertigo
Speed Devil #2

im using r/o water
1000W + 400W hps
AN conni. a/b for nutes (currently giving 2ml total in ea. bucket)
air temps are 75-80 (day) / 60-65 (night)
RH is 20-30 %
light cycle started @ 20/4 but yesterday i bumped it back down to 18/6 thinking maybe too much light ..lol
i'll say 1st off..i overfed them but that was over 2 wks ago and i almost lost em all..But through persistence i managed to nurse 9 outta 15 back to health (almost)
my lights were hung @ 16in until yesterday.i raised back up to 24in. thinking leaf curl had to do w/ lights too close...
Currently 6 of the autos are being flushed..(just in case i overfed again)
these same 6 were in a 27 gal totes up until yesterday...most of the curled leaves are from these 6. nute solution was rather weak that i had in totes rez.
but yet i had some brown spots on some leaves (which is why im now flushing)
So w/ all that said does anyone have any advice for my situation?
They all seem to be growing despite leaf curl..actually all 9 have started to flower :O)
just not too confident if i can get a decent yield outta this colossal fuck up i produced..lol i guess we'll cee
thx for reading!!

 

[Stunted]

They don't look that bad...but its a little hard to tell with your HPS on, can you take some more pictures with the lights of?
What are your res temps?
What is your PH?
What is your nute strength in ppm/ec?

This may be better suited in the infirmary, more people will see it there

 

[mr.sessemia]

youll need to take pictures with you're lights off ,..ppl cant see the color of your plants to help with a diagnosis ,...ill do my best. from some of the pic's it looks as if some of your plants leaves are sticking/pointing UP..generally this comes from excessive heat...you my wanna keep your day temps closer to 70 75(if heat is the problem). also i cant tell if the spots are from foiler feeding or the begenning of cal deficiency ........you have to turn your lights out.......the pic where the leaves are droopy/clawed could be from your plants being under watered/thirsty also what type of soil/medium are you using?