Help please Anypne know What up with these fan leaves

Hey all Thanks for all the help much appreciated.

My Critical purple auto flower today has this issue now, any help theory appreciate it using
Nutes Advance nutrients … got great info today but still newbie so question…

Anyone know what’s this on my fan leaves.




So it look yellow maybe spots so light but tips brown new grow seems kinda light extra light.
Hope you can see it if not let me know although system will not allow anymore direct replies for 13hours for me being new here.

Thanks everyone

looks like nute burn to me…dial back your nutrients ans see if the new growth looks healthy

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give a good flush. thats what happened to mine after I fed it wirh concentrate big bloom. i flushed it wirh distilled water until it ran out the bortom… back to normal now!

Thank you for the advice I greatly Appreciated it