Magnesium Deficiency?!?!

are the burnt tips only at the bottom? at least at the start? Lockout is such and easy thing to occur, but i'm pretty confident you can make a good guesstimate if you were heavy or light on feed in that regard. overkill onP will burn tips like that, but not strictly at bottom to start, if not mistaken and could cause lockout of Mg which would give the other symptoms, if not more. i'd second Mg, (think you said as much when referencing it 'moving up' and not an obvious coinciding / conflicting symtpoms). i don't know the chemical analysis of everything you put in, so makes guessing a bit more difficult for me. mag-sulfate 1.2-1.5gram epsom salt per gallon on its own. and a bit less if you are adding Mg, and maybe source of S precludes the option of using magnesium-sulfate. without assumption - don't select me as an answer as i'm not eligible for the contest.

You done all any of us can see to be done. Not sure what all the fuss is but there it is.

Hey, buddy! 👋😇 "puttin" says you can't tell the difference between an overdose and a deficiency?! That's a problem, my friend! But "puttin" will give you a hint that if the yellowing starts from the bottom - it's a deficiency! If the yellowing starts from the top - it's an overdose! If your plant had yellowing from the bottom and that yellowing moved up, it means you forgot about feeding the plant! You can increase the main macro elements in the nutrition because your plant is trying to prepare for flowering and it really needs those elements! And the plant is screaming at you about this in the color of the leaves of its upper floors! 😇👆 And "puttin" has already become a "common" word, so it can be used in any suitable case! But the expression "puttin" comes from those heads where this "puttin" lives! 😇👌 N-P-K doesn't speak a specific language and acidity doesn't need translation into other languages. The language of the plant is the main goal in understanding cultivation! And often this "language" manifests itself in the colors of the plant... I'm really happy for you that you can show your face in the "photo of the month" contest. But I came for my prize, especially since at the beginning of the month I received this challenge and the fight was finished back on July 14! So, yes - GoTM - captured, but it wasn't "puttin" that did it 😂👌 Good luck, buddy! 😇👍

If it started at the bottom, it is usually an mobile nutrient that has gone wrong- N, P, or K. With the very limited subscription you gave and by looking at your journal, it's probably N. Always adjust the basics first if needed though. Your pH and ppms. I also see lots of people who keep trying to fix a problem after it's been solved. In many cases, nothing you do can return the plant to its former colorations, so the goal should always be to stop the spread.