I was going to say its your lighting, but if you're using a 400watt MH then there should be no problem. It has to be something in your nutes/soil , by the way what strain is it? If its low-ryder it could be roughly the right size.
Joel Reviewed by Joel on . seedling slow growth my seedling is 1 month 2 weeks old and is only 7 cm tall and has about 10 tiny leaves, the top newer growth is a light green/white color including the new leaves but after they grow however small it is they grow it turns a green color, i have it under a 400 watt mh on 24, in a pot of soil, any suggestions why its growing so slowly? Rating: 5