No crecen, se ven amarillas y marchita, que puede ser?

also, you'll want 2parts coco 1 part perlite or similar for good drainage qualities. 50/50 in soil.

coco -- fertilze every irrigation at 1.3-1.5 EC of well-balanced diet. buy "hydro" nutes that are 100% chelated and plant-ready. Get 10% runoff religiously each time you irrigate and it cann''t buildup in soil. you can feed too much, but you know it's not buildup when you see a tox symptom, which is a benefit. Easier to diagnose that you are giving too high of concentration of "something" when it happens vs guessing if it's a rootzone issue or formula issue.

Keep watering with Nutrients or just start a new one because 10 weeks is too long for this size. Good luck with your grow

Soil has some food in it. You can push all grow without any feeding. Coco is plain. You have to feed with almost every watering. Warering regime is different for coco and soil, same as ph is different, depending in which medium you grow.