How to stop yellowing of leave/dying..

I've been away and left the girls in the care of someone else i came back only to fine them in some bad shape.. HELP IS MUCH NEEDED

Maybe take a few photos with more natural light? Bit hard to see the leaves in detail. Wish I could help, but I'm in almost the same boat as you!

erm .. I think you got two problems .. tho one have been corrected now I guess .. I hope. ..

look like they got dry at some point .. underwater .. all them small dry bottom leaves point in that dirrection ..
beat up the one who did "take care" of your plants .. atlest dont share your smoke with him ..

other problem is over fertz .. I see clawing leaves .. and I belive nut burns .. to mouch Nitrogen .. cut back on the nutriens .. only use clean water next few waterings .. if it was me I would give em a good flush .. with clean temperated water ..

give the leaves that look bad on the bottom a tiny tug, if they want to stay let them otherwise pluck em IMO

too many nutes......back off!

It's always someone else's fault. Jan , these mongrel plants have been sick for longer than 2 weeks and your the reason. Fuckin worst plants ive seen in sometime Jan.
Anyway its done now .
1-Temps too high
2- poor venting
3- bad soil
4- no ph monitoring
5- poor feeding schedule.
6- moisture stress.

thank you for your answer.. I HAVE BEEN AWAY FOR 2 WEEKS!! it was not like that.. they are all just test grow bag seeds so im not all but hurt i just want to have some idea so i can try my best to fix it.. puff aint blaming no body i had to go i asked someone to look after it.. thanks thou

thank you all for your help.. btw much appreciated