your using organics in a dwc yea
Correct although I believe what started all this is overheating my room with a new light. I've grown with the exact same food in the same setup before for years with no issues but I stopped growing for 10 years.
Here's my understanding of everything I did wrong thing grow.
1. Did not wash hydroton. Got lots of mud. Ph swings
2. Cheap 100 dollar and watt light replaced with powerful new light that took everything in my room to 40 degrees c for hours
3. Light way too powerful for young plant
4. Mixing food way too strong
6. Overwatering, dripper on top part always on. Turned it to 15 on 45 off today.
7. Rockwool. I remember peeling it off in the past but didn't remember why. I do now.
8. No chiller, got one installed today.
I switched to non organic food to try and resolve this but I didn't get anywhere. I am hoping those chopped roots may help recovery but on monday if it looks sickly still I'm pulling the plug and starting over with my new found wisdom.