One of my girls is being weird. She's one of three aurora indica mostly all grown the same, and the only one that's doing this twisting/curling up top. I grow in FFOF/perlite in 3gal smart pots and feed with a poo tea(guano,worm casting,rock dust, molasses). Ph is 6.5-6.8 in and out. Just flipped to flower a few days ago.
....NITROGEN TOXICITY Dark green leaves and foliage Leaf tips turn down, without signs of overwatering. You may notice yellowing on the affected leaves or other signs of nutrient deficiencies as time goes on Nitrogen toxicity is often but not always accompanied by nutrient burn The Claw often seems random, affecting leaves here and there Heat and pH problems will make the clawing worse, as they stress out the plant and lower her defenses As time goes on, the claw leaves will eventually start turning yellow, getting spots, and dying