New Grower I need a plant doctor! (Revised with picture)

[Plantbased]

Hello world and those who inhabit it. I have a situation: Organically grown Plants dying/on verge of death after going completely dry over night. They are my first grow experience survivors

SETUP:
*Lemon Bud plants (feminized/photoperiod) by Green label Seeds
*grow tent
*600w LED with veg/bloom switch
*Clip on fan
*Roots organic soil
*Humidity=59% Temperature= 85f

Any advice is much appreciated
Sorry for multiple posts, I'm unsure how to delete posts.

 

[KonopCh]

Turn off lights and take better pictures.
Fill data about troubles you have, there is sticky thread.

 

[Plantbased]

Hey so this with lights off, the plant on right is dry and brown everywhere but bud sites. Plant on left is recovering

 

[babethPOWERS]

Looks like too much nutes and heat

 

[Plantbased]

Looks like too much nutes and heat

It would probably be heat then. I think the plants starved of CO2 when I closed the tent without fan inside. Only nutes I added so far is local earthworm castings. Roots organic soil comes with nutrients. Any remedies?