immediate effects of dry DWC res. high heat/light burn? nutrient lock out? w/pic

hey all,

came home to find the res dry on almost all 3 plants,
grow is:

White Widow
DWC 5 gallon /SCROG
2x 600w HPS air cooled/lumatek high par bulb
CO2 injection *1500
day 3 12/12
60 day veg
temps 88.5F-90.1F

AN sensi grow/bloom 1100ppm
ph * 5.8 or "a little bit more orange than green or brown but definitely pretty much yellow"

only 2 plants have been affected, only the 2 closest to the HPS bulb which was perhaps a bit too close.

these are the results:

leaves 1,2,3 in clock wise order, leaves 1 & 2 from same plant, leave 3 from other plant.


what happened to leave 3? this began almost immediately upon water/feeding and got worse through the night, it seems to have sstopped spreading, all the elaves are curled down, and this only happened on the new growth and the leaves close to the active grow tips.

What will the consequences of a heat stroke like this have on my flowering? day 3?? significant loss of yield?

Is the brown papering edges the results of heat stroke or light burn???

any advice greatly appreciated!!

You spilled something on it.. did you spray?
how close are the lights?

As long as you take care use a little less for a week or two you'll be okay

i didnt spill anything or spray anything, i rushed to feed them real fast when i realized the res was dry, and the speckling on leave 3 happened real fast, is this a time for flushing? the HPS was too close i think, for a plant that had no water, but im looking for someone to confirm if thats true or not, i dont know what to do about fixing these babies, but im tryin to stay positive

the lights are now about, 18 inches away and were perhaps 10 inches away, which was ok for the MH,

Honestly all you can do is fill the res, back off on the lights and pray. They may have experienced a massive pH shock or some lockout when they dried out. Give it a good environment and it should survive. I'd imagine they dry out in the wild all the time.