What happen to my girl

Exhausted and with a fucked up metabolism from 24/0 continuous light. Go to 18/6 ASAP, all cannabis plants NEED sleep. Give them half strength liquid nutrients too.

Some plants are more sensitive to light. I have had issues with light burn and it looks a lot like that! Easily solved by dimming the light or raising it higher. Good luck and happy growing!

I actually used some liquid fertilizer as well. I would dilute it a few thousand times and water with a few days in between, usually three days for a change. But now it stops growing and no new buds.

Hunger :)

By Top dressing you mean organic yeah? In that case it takes quite a few days to a few weeks for top dressing organics to break down and become available for the plant to use. Is the yellowing one in the same kind of soil as the rest? If they are all the same soil then check the Ph from some run off from that pot next time you water and double check its nothing crazy... if you top dressed today or even two days ago give it some time to work...my advice is wait a week and then top dress again ONLY IF she looks like there is no improvement or shes looking worse. But only after you check run off Ph first ok? The other thing you could try is dropping the lights to 20 hrs on and 4 hrs off- some strains just need a few hrs of dark to do some recovering so they dont get too stressed but if the rest look fine then leave lights as is I guess. I think if you used a good quality top dressing and used a good amount of it just give it some time to work my friend.