It's really hard to tell from those pics.
Nute burn is a browning of the leaf tips, they often curl up and the brown spreads a little down the margins of the leaf.
Nute deficiency is a yellowing or lightening of the tips, which can also indicate light burn and is often combined with heat stress.
I think you may have had some light stress.
Those dark lines down the middle of the leaf, is that normal for those plants, if not, it could be copper or calcium deficiency BUT I can't see any other symptoms so I doubt it.
We need much better pics.
Nute burn is a browning of the leaf tips, they often curl up and the brown spreads a little down the margins of the leaf.
Nute deficiency is a yellowing or lightening of the tips, which can also indicate light burn and is often combined with heat stress.
I think you may have had some light stress.
Those dark lines down the middle of the leaf, is that normal for those plants, if not, it could be copper or calcium deficiency BUT I can't see any other symptoms so I doubt it.
We need much better pics.
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