Grape Stomper OG help

Usually never have many plant problems at an early age,but these are not looking good if you can see the pic.
DWC
ppm is 350.Jungle juice grow only.
PH is about 5.7-6.0 was at 6.8 at first.(not good)
Its starting to come back to green after a week.
Only thing i can think of is my PH was off.
All comments and suggestions welcome.

The high PH will lock out all of your micro nutes..Hopefully if youre back in range the new growth will be just fine. The effected leaves will keep that appearance so just monitor new growth.
Happy growing!