Hi, in the last picture the plant looks very dark green to me, which could indicate that it's actually an overfertilization (nitrogen makes leaves dark green, but it might be just the picture) which in turn could cause a nutrient-lockout and then deficiency symptoms. Unfortunately you don't have a grow diary, so we don't know what medium you use, which type of fertilizer, how much, how often and so on to see if this could be an issue here.