k def? Ca def? sulphur? help plz!

started on growth toward top of plant.
day 38 of veg and only 4 days after potting up. plagron bat mix.
any ideas?

noone..?

I’ve seen Ca deficiencies start like this along with Mg deficiencies start similarly.

mid you have a calmag product I would use it for a week and see if it helps to slow or stop the progression.

I would also if you can, do a soil pH test and make sure your input feed is pH’d properly.