neuraxisanswered grow question 4 years ago High there!
Really dark & bend down(like a claw) leafs are sign of nitrogen toxicity.
Flush those lasy with 3Xthe size of the pot of plain (ph ajusted if possible) water.
Lets them dry and feed them only with water for a couple of day.
Slow down on fertilizer: concentration and frequency.
Use only water 1 on 3 watering.
Good luck with this.