First timer here. 3rd week flower. When I started these I used miracle grow. I know it’s not the best stuff to use now but I didn’t know earlier. I have been feeding them like 1/4 doses of fert cause anything higher they show signs of nitrogen toxicity. I guessing the miracle grow still has nitrogen in it. I backed off and haven’t been using much. I have been on top of the PH levels and stuff and everything has been going good until now. Noticed the new leaves starting to turn a little yellowish and the veins are yellow too. Is this normal for the flowering stage ? Or is this some kind of deficiency from the small levels of feed? I Was thinking of using a PK boost. Maybe I’m just peaking out and being to worried haha.