What deficiency is this

Hello my plants are experiencing extreme yellowing on older leafs seems like it's taking them out 1 by 1 but now the tips of my leafs are browning any help would be great thanks.

Jesus-mary what on god's green earth is that!? How long has it been flowering and what have you been feeding it? it looks pretty stressed out but it might be that it's just reached the end of its little life. Can't quite tell from the pics

Yikes, give a little info on your grow set up maybe we can figure out where you went wrong ..

Ok it's an auto if that helps I have been running 24-0 for its entire life it's exactly 42 days from seed haven't been feeding it any thing as of yet waiting for my fox farm nutes to come if you need any more pics let me know

Harvest it she's done. Those are signs that the auto is done.

stay dank

Well without telling us what type of soil. What type and size of pot. What type of light. What strain it is. What temps your at your not going to get much help.... I can tell you at 45 or so days from seed that thing looks beat and there's not going to be much saving it at this point. I have photosenstive indicas that finish in 56 days after the flip..why the autoflower? My guess is the medium isn't right but who knows you've hardly provided any info.

Its like saying "hey my car isnt working right anyone know whats wrong?" with a picture of the car below it......

Id trash it order some decent genetics and get your potting situation figured out.

I'm growing in a pc case Temps are at 77 using 4 cfls 100+watts using pro mix ultimate organic soil I'm using a 2 liter tupper ware container here are some more pics

Harvest your gram and start over. :'(