Hello, this is my second grow, using 450w led in a 2,5x2,5x7 with 4 Northern Lights Autoflower !!
They are at day 50, aproximatly third week in flower, seems to sufer hard from a deficiency or a ph problem
My grow room is at 26-28c and the rh is between 40-55%, growing in Pro-Mix soil in 5...