Autofloreciente en DWC sobrealimentada?

Looks like a calcium deficiency to me personally, try giving some CalMag or Epsom salts. Those leaves won’t repair but it should prevent more, and continue growing just fine

Looks very similar to my issue. I'd guess there either (or most likely both) I'd guess excess amount of N hindering Ca & K uptake. Looks like issue has started after a week or two in flowering? Plant nutritional needs change by that time. I never really figured how to stop it or fully prevent so I was dealing with it whole flowering cycle. DWC should be ez to run for example a day with water only res or a mild nutrient solution. As the budset has started plant uses less Potassium and more Phosphorus by now. When the buds start to harden/ripen by then you'd want to cut P low and higher K. N should be steady 100-150ppm depending on strain throught the flower. pH'ing the res between 5.8-6 would help. Most of your micros will be cut out at over 6pH.

if your PPM's drop( your PH will prob rise ) means your under feeding. A slight drop in PPM is ideal ( 100 per week ) Test your PPM's at the same time since they will fluctuate with lights on / lights off schedule.

Also is there a dead bird in the middle of the plants looks weird

Sorry but I think your plants are pollinated by hermies check for balls