Shagrathanswered grow question 4 years ago Hi there!
Kinda looks like a potassium deficiency, but at the same time the leafs look dark green so it might also be nitrogen toxicity that's locking out the potassium.
I suggest that you take a look at this mulders chart and it can help you determine if the deficiency is really lack of the spesific nutrient or rather abundance of the other.
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.thedailygarden.us%2Fgarden-word-of-the-day%2Fmulders-chart&psig=AOvVaw1RYhiRDYQLWul-6o6GSOVU&ust=1593643631538000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCOiw96fPquoCFQAAAAAdAAAAABAI