Not sure which deficiency it is...Please HELP!!!

Autoberry @25 days
300w LEDs 1x 5gal DWC, ph 6.0 1200 ppm 24/0 lights 78-81F 38-45 humidity
Some of the leaves have darker veins. I'm Using General Hydroponics Flora Series. I added nutes at day 21 and it is now day 25
And a few tips started to curl down

In between the Veins is getting lighter in color (Im color blind so I cant tell which deficiency it could be)

my guess would be pH is causing issues try the pH at 5.5-5.7

what hex said,no higher than 5.8 and no lower than 5.3.

OK I did readjust it! Fingers Crossed
Thank you for the help

Some of the leaves have necrosis on the tips and edges now

lower your ppm it should be about 700-900 at this stage.And your ph 5.4-5.7,yor ppm shouldnt be that high until you induce flowering.